This scientist's theory of evolution by natural selection shook the world by suggesting all people evolve from common ancestors:

An act of defiance by Rosa Parks sparked a bus boycott in this Alabama city, leading to one of the key events in the African-American Civil Rights Movement:

Henry Dunant, a Swiss businessman and social activist, is known as the first winner of the Nobel Peace Prize in 1901. He was recognized for his work which ultimately led to the creation of this global humanitarian organization in 1863 which Clara Barton brought to the U.S.:

This German scientist developed the theory of special relativity that more than 100 years later continues to influence the scientific community:

This Italian Renaissance genius is credited with numerous inventions (among many other talents) including the helicopter, scuba gear, and weapons of war:

Queen Isabella sponsored the trip that allowed this Italian explorer to sail to the New World:

Bill Gates founded this software company which made use of personal computers more accessible to a wider range of people: