The idea of the us gaining all land from one seaboard to the other is called manifest destiny the us gained these lands through several different purchases, annexations, and agreements such as the annexation of texas the treaty to give the us land in oregon below the 49th parallel and so forth.
Explanation:
the Munich agreement if i am not mistaken
Correct Answers:
confirmed that the earth revolves around the sun
created a powerful telescope
discovered moons orbiting Jupiter
Hope this helps! :)
