This union leader and socialist candidate ran for president 5 times

Explanation:

Eugene V. Debs was a trade unionist and socialist.  He was one of the founding members of the IWW( Industrial workers of the World). He ran for the presidential elections for five times as a member of socialist party of American member. He is one of the most famous American socialists. He was a member of Democratic party and was elected to the Indiana general Assembly 1884.

a. because the u.s. was the leading with the most technology, economy, etc. also was teamed with other allies witch boosted the economy and materials to improve technology and use it.