Answer:
D.) the ambition of those who had to endure segregation
Explanation:
Congress has the right to override a veto from the president if they think it is unjust.
I don't know exactly what your looking for but, it could do with religion or different ideas of the country.
For example: Let's say that America goes to war with Russia and the Americans didn't want to go to war. The people have a differed idea from the government, meaning that the military does not have the peoples support.
Hope it helps!
