I believe you answer is C. But don’t quote me on that.
Answer:
not being able to vote or sum
Explanation:
They became rivals because each one wanted more power than the other for example in world war 2 the USA made the atomic bomb which showed the world that the Americans were the most powerful country but after ww2 Russia and USA started a Cold War which lead to the feud between there political views and the start of better technology and the space race
The first country to do so was Portugal
B. to help freed slaves adjust to freedom