The louisiana purchase in 1803 doubled the size of america
I am doing it for points because it just so happened you asked me not to. :)
Anti imperialists wanted the country to not extend its trade and to become more self independent in their own country.
Explanation:
The time of 1890s was an important period in Us because here were two factions that were discussing how US would approach the world in the future.
The Imperialists knew that the country needed more resources and to make sure that it was possible they needed more ground covered and they were also alive to the fact that European influence of expanding their culture and institution had brought the, great profits and power.
The Anti imperialists wanted the country to rely on its old tradition of self determinism and isolation to develop the country to greater heights and saw that there would only be conflict like the European nations if they were to expand.
It was a source of life because it watered crops and provided fish. But it also had devastating floods because of the continuous elevation on the river bed.<span />