Quakers first major colony was Pennsylvania, Quakers did settle in this place but not too long. Next colonies were West Jersey and North Carolina they settle for some time in North Carolina but a war arises between French and Quakers and the Quakers lost that battle.
William Penn's colony was where the Quakers settled. He wanted to make a colony where Quakers could practice their beliefs freely. William had some land from the king and he decided to call it Pennsylvania. Penn's settlement was called Philadelphia
Well the Europeans were the first on to settle in Pennsylvania. One of the European was William Penn, the son of Sir Admiral William Penn. William Penn (the son) was part of a group called Quakers. The Quakers believed there shouldn't be any wars and thought that everyone was equal .
Social plurality in America refers to "melting pot" of ethnicities. When William Penn established Pennsylvania for his fellow Quakers, they also invited other ethnic groups to settle there. Soon the Quakers settled in Conneticut also.