Answer:
By the fact that we are a free country. When really we're not that free
Explanation:
Self-determination was point 10 of Wilson's Fourteen Points. Wilson wanted to re-draw the frontiers of eastern Europe so that races ruled themselves. In some ways, self-determination was achieved.
McCarthyism
a campaign against alleged communists in the US government and other institutions carried out under Senator Joseph McCarthy in the period 1950-1954.
Through attrition and massive advances on several fronts" is the correct answer. The main advantage of the North was that there were far more soldiers than in the South.