why did the westward expansion begin? what were the reasons of moving to the west? why did Jefferson buy the Louisiana territory ? what roles did Spain and France have at that time ?

Americans thought it was their god given right to expand Westward and take over all of America. They also needed the land as it was good for farming and agriculture. There was also a population boom as more people were born and more people moved to the United States.

Explanation:

no every country is held to the same degree as others just some member countries such as the usa and germany are more economically sound so the need to show there support to all others