1. economically
2. race
3. sex
4. look
He trained rats in the correct route through a maze,then deliberately damaged their brains and observed that this did not inhibit their progress through the maze.
The NAACP, or National Association for the Advancement of Colored People, is an old and influential organization that seeks to protect the civil rights of minorities, especially the black population of the United States.
It was founded at the beginning of the twentieth century in 1909 with the sole purpose of fighting for the rights of African Americans, working mainly in the area of education and the judiciary, with respect to protecting this minority of racist laws, such as Jim Crow, which intended to deprive blacks of possessing civil rights.
Nowadays, the term "colored" is seem as outdated and obsolet by a great quota of the population, that prefers the terms "afro-american", "african-american" or "black".
