The classes of samurai and peasants which had social mobility to some extent in the Warring States period (Japan) were fixed by taiko kenchi (the cadastral surveys conducted by Hideyoshi) which started around 1582 and katanagari (sword hunt) which was carried out in 1588.
戦国時代(日本)に比較的流動性があった侍と百姓が固定化されるのが天正9年（1582年）頃から始まった太閤検地や天正16年（1588年）の刀狩などによってである。