I think what's common between the three is that, these are the turning points where human minds brought about change out of necessity. The ages before those mentioned are periods of great depressions and unfortunate event. So, these fueled the people to change for the better and appreciate science and art more.
Answer:
because they were freed slaves who voted to support the Republican ideas
The answer is c, mccarthyism. though it isnt a period of history, but rather a mindset.
Answer:
When the snow melts on the mountain ranges it sent a torrent of water causing the banks of River Nile to flood.
Explanation:
The river Nile floods the flat land in Egypt . The floods are controlled by Aswan dam.
The River Nile is the longest river of the world. Only 22% of it passes through Egypt.
