Which of these major events occurred during the precambrian time? a. landmasses were all below water. b. cyanobacteria filled the water and air with oxygen. c. trilobites became extinct. d. people lived on earth.

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.