Identify a key event in which civil rights protesters staged a demonstration

The Greensboro sit-ins is an instrumental move, and also the most significance sit-ins of the Civil Rights Movement. The Greensboro sit-ins is a series of nonviolent protests in Greensboro, North Carolina, in 1960, which led to the Woolworth department store getting away its policy of racial segregation in the Southern United States. 

b)

it created free trade throughout the colonial territories.

someone or something lol