<span>He established a small court in which he brought sailors, mapmakers, astronomers, and others who were interested in navigation. From this court, he sent expeditions west to islands in the Atlantic and south to explore the western coast of Africa.</span>
The south was mainly agricultural, cultivating cotton in some form was most people's entire livelihood, creating sort of a cultural divide from the north. plus, the menial and arduous labour in the south was incredibly appealing for slave owners, but this didn't happen in the north where factories and mills were everywhere and staffed by non enslaved people. cotton united the two by the south growing it and the north turning it into textiles and other finished products. together they had quite a good system since each part was able to specialize
D, because that one starts with "why" which automatically opens it up for an argument. While the others are just simply statements or just a basic question.
The National Reclamation Act funded irrigation projects in West America. So, as you can imagine - the most likely answer here is B! =)