The Assyrians forced defeated kingdoms to pay tribute. Any resistance they crushed completely. The height of Assyrian conquest came under King Sargon II (722-705 BCE), who named himself after the first great ruler of Sumer (see notes for lecture 1).
The answer is D, the Louisiana Purchase (1803) was a land deal between the United States and France, in which the U.S. acquired approximately 827,000 square miles of land west of the Mississippi River for $15 million.