Question

Imagine you are giving a speech to your class about reasons why the United States rapidly formed over a dozen states in the West between 1850 and 1900. Which event would be best to use as supporting evidence in your speech?

Answer 1

Assuming that this is referring to the same list of options that was posted before with this question, you would want to talk about the idea of "Manifest Destiny" since this was the main driving force of expansion.