看图

Slave breeding in the United States was the practice in slave states of the United States of slave owners to systematically promote the reproduction of slaves to increase their returns.^[1] Slave breeding included coerced sexual relations between male and female slaves, forced pregnancies of slaves, and favoring female slaves who could produce a relatively large number of children.^[1] The objective was to increase the number of slaves without incurring the cost of purchase, and to fill labor shortages caused by the termination of the Atlantic slave trade.^[2]

Selective breeding between slaves with the aim of developing particular physical traits was uncommon, however,^[3] as most slaves were unrestricted in their choice of sexual partners.^[4]

所有跟帖： 

• 比大学生宿舍宽敞一些。十几平方米，八张上下铺，睡七个学生。 -萧岚- ♂ (113 bytes) () 06/30/2019 postreply 12:26:03

• 图？ -走石飞沙- ♂ (13915 bytes) () 06/30/2019 postreply 12:35:47

• 这个更宽敞。 -puyh- ♂ (176 bytes) () 06/30/2019 postreply 12:55:54