It was the "Triangle Shirtwaist Factory" where fire broke out in 1911 leading to the passage of stricter building codes and factory-inspection laws to <span>protect workers, since prior to this there were little-if-any public workplace safety regulations in the US. </span>
Well, once the Americas were discovered and the colonist found that the soil was agreeable to grow different crops such as tobacco and cotton the colonists realized that they needed people to pick the crops. Originally indentured servants did the hard labor but then when they found that they could get labor by trading goods with African tribal leaders they resorted to importing Africans to the Americas as labor. The tribes in Africa were constantly fighting and whichever side won the losers became the slaves of the winning tribe. However, as Europeans brought valuable things to the continent of Africa such as weapons, salt, gold, and other things the leaders of the winning tribe would give their slaves to the Europeans. There were cases when Blacks captured other Blacks in Africa for the sole purpose of giving them to the European traders. Hopefully this helps. If you haven't see the movie La Amistad, it will explain in more detail what I have written. I learned a lot from that movie. I must warn you the first 5 to 10 minutes are a bit gory. I had a hard time watching that part.
The United Nations decided that they needed to have a peace-keeping force, a middle man, and treaties, so that they could try to stop wars from happening.
hope this helps
This site will probably help you, hope this help.
http://www.shmoop.com/esperanza-rising/marta.html
