It was caused by Internal conflict of the military governors
Vietnam was a French colony fighting for it's independence and the 2 Korean nations arose after WW2. Korea was originally one nation but controlled by Imperial Japan. The USSR took the north and the Allies the south after WW2. Korean War is still unresolved and Communist Vietnam (North) won and still rules.
Francis Cabot Lowell began to transform the role of women in the United States, because he employed women who worked in his farms who were between the ages of 15-35 in his textile factories. He also put them in religious activities and educated them, as well as let them board in the company houses.
C the egyptions used the sistrum