By the time the period of European exploration began, most maps included the
Americas.

On the first leg of their three-part journey, often called the Triangular Trade, European ships brought manufactured goods, weapons, even liquor to Africa in exchange for slaves; on the second, they transported African men, women, and children to the Americas to serve as slaves; and on the third leg, they exported to Europe the sugar, rum, cotton, and tobacco produced by the enslaved labor force. Traders referred to the Africa-Americas part of the voyage as the "Middle Passage" and the term has survived to denote the Africans' ordeal.

Explanation:

the constitution of the united states gave congress the absolute authority over immigration laws

b.

explanation:

he is racist

"oh, lets coppy china and build a great wall around bla bla bla.that way,we wont lose out to other countries." in the end, he did not build anything