Changes

[[Tokugawa Ieyasu]], the first Tokugawa shogun, officially acknowledged 185 domains in the early 17th century; by the mid-18th century, the number of domains stabilized around 260, but the total number of distinct domains that existed at one time or another over the course of the Edo period exceeds 540.<ref name=kodansha>"Han." ''Encyclopedia of Japan''. Kodansha.</ref>

[[Tokugawa Ieyasu]], the first Tokugawa shogun, officially acknowledged 185 domains in the early 17th century; by the mid-18th century, the number of domains stabilized around 260, but the total number of distinct domains that existed at one time or another over the course of the Edo period exceeds 540.<ref name=kodansha>"Han." ''Encyclopedia of Japan''. Kodansha.</ref>

Though many ''daimyô'' continued to hold their ancestral territory as their ''han'', in theory all ''han'' were fiefs granted by the shogunate. The shogunate reserved the right to give and take away lands from ''daimyô'', and often made use of this power, reassigning a given territory to a different samurai clan, and assigning the former lords of that territory to a different domain elsewhere in the archipelago, or simply denying them a territory entirely.

Though many ''daimyô'' continued to hold their ancestral territory as their ''han'', in theory all ''han'' were fiefs granted by the shogunate. The shogunate reserved the right to give and take away lands from ''daimyô'', and often made use of this power, reassigning a given territory to a different samurai clan, and assigning the former lords of that territory to a different domain elsewhere in the archipelago, or simply denying them a territory entirely. This occurred particularly frequently in the first fifty years or so of Tokugawa control, with 281 instances of clans being moved from one domain to another, and 213 instances of clans losing ''daimyô'' status, and their domains, entirely during that fifty-year period. The latter was most often due to the absence of an heir; though shogunate policies were relaxed later on, initially, deathbed adoptions were not permitted.<ref>Schirokauer, et al. ''A Brief History of Japanese Civilization'', Wadsworth Cengage (2013), 131.</ref>

The power or status of each ''han'' (and of their ''daimyô'') was determined by its ''[[kokudaka]]'', normally a measure of agricultural or commercial production in units of ''[[koku]]''; in some cases, domains were assigned a ''kokudaka'' out of proportion to their agricultural production, in recognition of their importance strategically, diplomatically, or otherwise. The smallest domains, by definition, had a ''kokudaka'' of at least 10,000 ''koku'', while the largest, [[Kaga domain]], boasted a ''kokudaka'' of 1,000,000 ''koku''. The vast majority of domains were closer to the lower end of this range, and only a handful of domains were assessed in the hundreds of thousands of ''koku''.

The power or status of each ''han'' (and of their ''daimyô'') was determined by its ''[[kokudaka]]'', normally a measure of agricultural or commercial production in units of ''[[koku]]''; in some cases, domains were assigned a ''kokudaka'' out of proportion to their agricultural production, in recognition of their importance strategically, diplomatically, or otherwise. The smallest domains, by definition, had a ''kokudaka'' of at least 10,000 ''koku'', while the largest, [[Kaga domain]], boasted a ''kokudaka'' of 1,000,000 ''koku''. The vast majority of domains were closer to the lower end of this range, and only a handful of domains were assessed in the hundreds of thousands of ''koku''.