Changes

Initially voluntary, the system was made mandatory for ''tozama daimyô'' in [[1635]] in a re-issuance of the ''[[buke shohatto]]'' ("various laws for warrior families"); this was expanded to all ''daimyô'' in [[1642]]. Lords were obligated to maintain a residence in Edo, where members of their close family would reside as hostages against the ''daimyô's'' disobedience or rebellion. As of [[1648]], each lord's heir was obligated to travel to Edo as well, alternating with his father, so that either the lord or his heir would be in Edo at any given time. At some point after that, it became standard for the heir to simply be raised in Edo, and not to travel to the home domain (''kunimoto'') until he succeeded his father and became ''daimyô''; this further served the Tokugawa purposes of weakening ''daimyô'' ties to their power bases, as it meant that most ''daimyô'', having been raised in Edo, had little familiarity with their domain and its people. The first entry of a new ''daimyô'' into the domain, an event known as ''okuni iri'', was thus heightened in significance, and was often accompanied by great celebrations, and commemorated in paintings or other works.<ref>''Edo-zu byôbu to gyôretsu'', exhibition pamphlet, National Museum of Japanese History, August 2014.</ref> Retired ''daimyô'' were also obliged to travel to Edo occasionally, to be re-confirmed in their being granted leave to remain in their domain (or in Edo, as they wished).<ref name=nagairei>Nagai Hiroshi 永井博, ''Sankin kôtai to daimyô gyôretsu'' 参勤交代と大名行列 (Tokyo: Yôsensha 洋泉社 MOOK, 2012), 126-131.</ref>

Initially voluntary, the system was made mandatory for ''tozama daimyô'' in [[1635]] in a re-issuance of the ''[[buke shohatto]]'' ("various laws for warrior families"); this was expanded to all ''daimyô'' in [[1642]]. Lords were obligated to maintain a residence in Edo, where members of their close family would reside as hostages against the ''daimyô's'' disobedience or rebellion. As of [[1648]], each lord's heir was obligated to travel to Edo as well, alternating with his father, so that either the lord or his heir would be in Edo at any given time. At some point after that, it became standard for the heir to simply be raised in Edo, and not to travel to the home domain (''kunimoto'') until he succeeded his father and became ''daimyô''; this further served the Tokugawa purposes of weakening ''daimyô'' ties to their power bases, as it meant that most ''daimyô'', having been raised in Edo, had little familiarity with their domain and its people. The first entry of a new ''daimyô'' into the domain, an event known as ''okuni iri'', was thus heightened in significance, and was often accompanied by great celebrations, and commemorated in paintings or other works.<ref>''Edo-zu byôbu to gyôretsu'', exhibition pamphlet, National Museum of Japanese History, August 2014.</ref> Retired ''daimyô'' were also obliged to travel to Edo occasionally, to be re-confirmed in their being granted leave to remain in their domain (or in Edo, as they wished).<ref name=nagairei>Nagai Hiroshi 永井博, ''Sankin kôtai to daimyô gyôretsu'' 参勤交代と大名行列 (Tokyo: Yôsensha 洋泉社 MOOK, 2012), 126-131.</ref>

From [[1684]] onwards, the ''fudai daimyô'' of the [[Kanto|Kantô]] region had to make their ''sankin'' journeys every six months; seven clans alternated in the 2nd month of the year, and seven in the 8th month. Other ''fudai daimyô'' arrived in Edo in the 6th month, while ''tozama daimyô'' generally arrived in the 4th month.<ref>Miyamoto Tsuneichi 宮本常一, ''Nihon no shuku'' 日本の宿, Tokyo: Shakai shisôsha (1965), 165.; Miyamoto, ''Daimyô no tabi'', Tokyo: Shakai shisôsha (1968), 57.</ref>

From [[1684]] onwards, the ''fudai daimyô'' of the [[Kanto|Kantô]] region had to make their ''sankin'' journeys every six months; seven clans spent the 2nd month through the 8th month in the city, and another seven clans spent the 8th month through the 12th month there. Other ''fudai daimyô'' arrived in Edo in the 6th month, while ''tozama daimyô'' generally arrived in the 4th month.<ref>Miyamoto Tsuneichi 宮本常一, ''Nihon no shuku'' 日本の宿, Tokyo: Shakai shisôsha (1965), 165.; Miyamoto, ''Daimyô no tabi'', Tokyo: Shakai shisôsha (1968), 57.; Ogawa Kyôichi 小川恭一, ''Shogun omemie sahô'' 将軍お目見え作法, ''Tokyojin'' 東京人 (1995/1), 78.</ref>

Though most ''daimyô'' were obliged to perform this journey regularly, some ''tozama daimyô'' were granted exceptions, in most cases due to their great service to the realm in other respects, or after successfully arguing for the excessiveness of the burden. These included [[Tsushima han]] which governed relations and trade with [[Joseon|Korea]], and [[Fukuoka han|Fukuoka]] and [[Saga han]], which contributed to the defense of the port of [[Nagasaki]]. Some northern domains which contributed to responses to Russian incursions also received temporary exemptions at times.<ref>[[Mark Ravina]], ''Land and Lordship in Early Modern Japan'', Stanford University Press (1999), 152.</ref> ''Daimyô'' could also request, and be granted, exceptions from ''sankin kôtai'' on a one-time basis, when the lord was ill or the Edo mansion had burned down, or when the domain was fulfilling its obligations to the shogunate through corvée contributions to public works that year.<ref name=nagairei/>

Though most ''daimyô'' were obliged to perform this journey regularly, some ''tozama daimyô'' were granted exceptions, in most cases due to their great service to the realm in other respects, or after successfully arguing for the excessiveness of the burden. These included [[Tsushima han]] which governed relations and trade with [[Joseon|Korea]], and [[Fukuoka han|Fukuoka]] and [[Saga han]], which contributed to the defense of the port of [[Nagasaki]]. Some northern domains which contributed to responses to Russian incursions also received temporary exemptions at times.<ref>[[Mark Ravina]], ''Land and Lordship in Early Modern Japan'', Stanford University Press (1999), 152.</ref> Further, the lord of the [[Mito Tokugawa clan]], and about thirty rather small ''daimyô'' houses, were of a status known as ''jôfu'' (定府), and were primarily based in Edo, not spending any considerable amount of time in their domains.<ref>Ogawa, 78.</ref> ''Daimyô'' could also request, and be granted, exceptions from ''sankin kôtai'' on a one-time basis, when the lord was ill or the Edo mansion had burned down, or when the domain was fulfilling its obligations to the shogunate through corvée contributions to public works that year.<ref name=nagairei/>

The ''sankin kôtai'' system ensured a reliable flow of considerable numbers of elite travelers across the country, contributing considerably to both official and private construction of [[post-stations]] and inns (and their surrounding towns), lighthouses and port facilities, maintenance of highways, and expansion of travel-related services, such as networks of [[hikyaku|messengers]], [[toiyaba|porters, and horses]]. The Tôkaidô saw 146 ''sankin kôtai'' groups every year, in addition to Imperial envoys, shogunal officials, and others.<ref>Miyamoto, ''Nihon no shuku'', 174. Meanwhile, the Mutsu Highway (''Mutsu Dôchû'') saw 37 ''sankin kôtai'' groups each year, the [[Nakasendo|Nakasendô]] 30, the Mito Dôchû 23, the Nikkô Dôchû four, and the [[Koshu Kaido|Kôshû Kaidô]] three. Miyamoto, ''Daimyô no tabi'', 57.</ref> Such entourages typically moved about ten ''[[Japanese Measurements|ri]]'' a day,<ref>Yamamoto Hirofumi, ''Sankin kôtai'', Kodansha gendai shinsho (1998), 110.</ref> often passing through several post-stations where they stopped for lunch, tea, or short breaks, as they made their way to the station where they would spend the night. Special elite lodgings known as ''[[honjin]]'' and ''waki-honjin'', employed chiefly by ''daimyô'' traveling on ''sankin kôtai'', and by others of similar status, quickly became standard sights in most post-towns after the 1642 expansion of ''sankin kôtai'' obligations.<ref name=honjin53>Watanabe, 53.</ref> [[Corvee|Corvée]] labor was employed to provide a considerable portion of the porters, boatmen, and the like. Barrier checkpoints called ''[[sekisho]]'' were established along the highways to regulate travel; among their functions, too, was to enforce that firearms not be carried into Edo (so as to help prevent rebellion), and that women (who might be hostage members of ''daimyô'' families) not be allowed to leave.

The ''sankin kôtai'' system ensured a reliable flow of considerable numbers of elite travelers across the country, contributing considerably to both official and private construction of [[post-stations]] and inns (and their surrounding towns), lighthouses and port facilities, maintenance of highways, and expansion of travel-related services, such as networks of [[hikyaku|messengers]], [[toiyaba|porters, and horses]]. The Tôkaidô saw 146 ''sankin kôtai'' groups every year, in addition to Imperial envoys, shogunal officials, and others.<ref>Miyamoto, ''Nihon no shuku'', 174. Meanwhile, the Mutsu Highway (''Mutsu Dôchû'') saw 37 ''sankin kôtai'' groups each year, the [[Nakasendo|Nakasendô]] 30, the Mito Dôchû 23, the Nikkô Dôchû four, and the [[Koshu Kaido|Kôshû Kaidô]] three. Miyamoto, ''Daimyô no tabi'', 57.</ref> Such entourages typically moved about ten ''[[Japanese Measurements|ri]]'' a day,<ref>Yamamoto Hirofumi, ''Sankin kôtai'', Kodansha gendai shinsho (1998), 110.</ref> often passing through several post-stations where they stopped for lunch, tea, or short breaks, as they made their way to the station where they would spend the night. Special elite lodgings known as ''[[honjin]]'' and ''waki-honjin'', employed chiefly by ''daimyô'' traveling on ''sankin kôtai'', and by others of similar status, quickly became standard sights in most post-towns after the 1642 expansion of ''sankin kôtai'' obligations.<ref name=honjin53>Watanabe, 53.</ref> [[Corvee|Corvée]] labor was employed to provide a considerable portion of the porters, boatmen, and the like. Barrier checkpoints called ''[[sekisho]]'' were established along the highways to regulate travel; among their functions, too, was to enforce that firearms not be carried into Edo (so as to help prevent rebellion), and that women (who might be hostage members of ''daimyô'' families) not be allowed to leave.