The answer is: Water management projects created huge reservoirs and lakes where there had been dry canyons.
The National Reclamation Act of 1902 was a federal law that was passed in order for the federal government to start major irrigation projects in the West.
The result of these major projects was the creation of complex structures and systems(reservoirs and lakes) that would allow for the transformation of arid lands into farm capable lands.
The Columbian Exchange was when the old world (Europe) trade with the new world (America) items. for example: Old World had horses. So if Europe never came to America... we wouldn't have them. Or new world had tomatoes. If Europe didn't have tomatoes... We wouldn't have pizza or delicious Italian goods.
<span>It was Walter Raleigh who got permission from Elizabeth I to establish a colony in North America. It should be noted however that this colony ultimately failed, and it wasn't until Jamestown that a viable colony existed.</span>
In the context of U.S. history, the term “carpetbagger” is used to describe Northerners who moved to the South after the Civil War, during Reconstruction (1865 to 1877).