Its the Gold Rush which occured in 1848.
Beavers might be the most well-known animal architects, and with good reason. These prolific builders fell trees and gather sticks and mud to construct dams, which create ponds that offer predator protection and easy access to food during the winter.
The advantage the north has is A-it had more industries, as the union could build guns, ships cannons at a faster and better rate than the south. The other answers just don't make sense as the south grew the most cotton, they both had experienced commanders, and the weather didn't have much effect. I hope this helps!
A severe drought that hit the Great Plains and lasted almost ten years
