They used actions to break up and implement laws against monopolies. They legalized unions. They implemented the sixteenth amendment which started income tax. They made the election of senators direct from the people. They also started the national park system
The answer is they provided fresh water used in agriculture
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.
