I believe, "Tanks were a fast and reliable means of transporting soldiers" is NOT true.
Elections held that occur in nonpresidential years are called congressional elections. Usually, the party in power loses seats. These elections are held every 2 years.
D: completed a citizenship process
After serving in the military, even for 5 years, you still have to apply for naturalization and get approved in order to naturalize through military work. You must also meet a lot of requirements beyond your military service to be eligible.
There is no citizenship contest.
Being born in the United States automatically makes you a citizen, you do not need to be naturalized.
D is the only answer that upon completion makes you a naturalized citizen because you have gone through the process of naturalization.
Communists wanted to spread communism internationally, while fascists were most concerned with strengthening their own nation