Saint thomas aquinas was a catholic priest in the dominican order and one of the most important medieval philosophers and theologians.
Answer: Federalism is the system of government in which power is divided between a central government and regional governments; in the United States, both the national government and the state governments possess a large measure of sovereignty.
The Alaska Purchase was the United States' acquisition of Alaska from the Russian Empire in 1867<span> by a treaty ratified by the United States Senate. </span>
