African Colonies, Oceanic Colonies, and Northern South American Colonies
The best and most correct answer among the choices provided by your question is the second choice or letter B.
The use of submarines during World War I had made <span>naval battles the key battles of the war.</span>
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<span>The group that was banned from voting under the constitution of 1866 was African-Americans. I might incorrect so please review the sources you have.</span>
The responsibilities of labor unions included: organizing workers promoting better collective bargaining between laborers and employers forcing corporations to consider the plight of their workers passing labor legislation hiring factory workers.