What groups of people moved west during the Manifest Destiny?

One of the groups affected by Manifest Destiny was lower and middle class white American farmers, tradesmen, and adventurers, who recognized the opportunity of acquiring a better life by settling on cheap land in the west. These were the people who were best poised to take advantage of the doctrine.

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  

if i am correct the answer is going to be a) the federal program of reconstruction ended.