In the first question, the correct answer is the fourth option: The number of enslaved workers from Africa increased in the South because they were needed to grow labor-intensive crops. The economy in the South was based on plantations and slavery. Plantation farms for cash crops like rice, tobacco and sugar cane demanded extensive labor for cultivation. To cope with the demand, wealthy planters turned to slave traders, who imported slaves from Africa to work on the plantations. So great was the demand for slave labor, that slavery became the backbone of the Southern Colonies. It is believed that, in the antebellum South, slaves constituted about one third of the population in the South.
In the second question, the correct answer is the first option: Goods had to be shipped to British ports before being sold to other countries. The Navigation Acts were a series of mercantilist laws passed by Britain in order to foster her mercantile marine and protect her interests in North America. In 1651, Britain passed the first of a series of Navigation Acts. These acts stipulated, among other things, that goods imported from Asia, Africa, or the Colonies to Britain could travel to Britain, or any British colony, only in British ships or of the particular colony, it also established that all the commodities coming from the Colonies had to be trans-shipped through Britain first, restricting colonial trade.
