I guess (c) the attack on pear harbor
Answer:
They had practical inventions, like locks and keys, paved roads, use of iron, plumbing, flushing toilets, and the sexagesimal clock (the beginnings of the way we tell time today). The Assyrians also brought about the use of the first guitar, first libraries, first magnifying glass, and the first postal system.
Explanation:
The South wanted to continue with slavery while the North decided to rid thw Nation of subjugation abd slavery
