China and the Soviet Union threatened to intervene if the United States continued to apply its military might on behalf of the south Vietnamese.
Answer:
I don't do anything special but im glad they made a day for honoring the people who have died serving América
Is this multiple choice? If not, i'd say that it is important for a historian to be sure of the authenticity of a primary source because a primary source needs to be proven to be accurate. It is important to study and make sure the source is authentic because the accuracy must be proven
