Let me help you!
It is important for the United States to build canals (wide canals) because the country is visited multiple times by hurricanes annually. Hurricanes are accompanied by heavy rainfalls and if left unchecked, causes flooding. The function of canals is to diffuse accumulated rainwater and direct it to greater bodies of water.
C) mountains
I just did this and it is the right answer
Then the four seasonal periods will be twice as long as they are now.
they sent them to fight the war