What was the league of nations and why did the united states senate refuse to ratify the treaty that would have made the united states a member?

the league of Nations was an alliance with the mission to stop wars in deal with stuff diplomatically. the United States Senate wanted to go back to being isolationist.

martin luther king (1929-1968) was an activist for the african american rights, mr. king has a profile of a kind leader that built a tenacity, respect and full of hope future. he was an activist through civil disobedience and no violence pressure mechanisms. he tried to build a more egalitarian and fair society. his efforts carried a reivindication message of the civilian rights to every west corners. for that reason, he won the nobel prize in 1964.

food chain i would say only because there is competition on getting food and survival