The Anti-Federalists were most concerned with the fact that the Constitution was giving far too much power to the central government over the states--meaning that they feared the federal government would become tyrannical.
Poitier was also the first black actor to win a prestigious international film award. With his unique career, Sidney Poitier helped change many stubborn racial attitudes that had persisted in this country for centuries. He has built the bridges and opened the doors for countless artists in succeeding generations.
Your answer is The Trojan Horse.
The Louisiana Purchase helped to double the size of the country and provided control of the Mississippi River. The Louisiana Purchase was a massive land purchase by the U.S. from France under President Thomas Jefferson's administration.