Because without isaac newton we wouldnt have found out about gravity until much later
While there was slavery in the past in European nations as well, it wasn't as rampant as it was in the United States where there were a lot of plantation owners who also owned multiple slaves and whole families at times - before this was made illegal during the US civil war.
They were his best fiends and were guilty
It taught us That strikes could turn violent, and the military couldn't intervene with it.
Popular sovereignty revolves around the idea that the people of a specific country/territory get to decide on certain issues.
This concept was used several times throughout American history. In the Compromise of 1850, the New Mexico and Utah territories used popular sovereignty in order to decide whether or not slavery existed in their territories. This concept was also used in the Kansas-Nebraska Act of 1854, as citizens of the Kansas and Nebraska territories got the chance to vote on whether slavery would exist in their territories.