The sect was formed during the English Civil War, when its founder proclaimed, "since there was that of God in every man," a formal church structure and educated clergy were not necessary.  
Its heaviest concentration of membership is in East Africa, followed by the United States, where early in their history Mary Dyer and four others were executed for their beliefs. One notable division occurred during the feud between John Wilbur and Joseph Gurney. The sect was formed during the English Civil War, when its founder proclaimed, "since there was that of God in every man," a formal church structure and educated clergy were not necessary.  Divided into Orthodox, Conservative, and Hicksite subgroups and emphasizing the "inner light", FTP, identify the Christian denomination founded by George Fox and spread in colonial America by William Penn, named for their tendency to "tremble" before God.
Its heaviest concentration of membership is in East Africa, followed by the United States, where early in their history Mary Dyer and four others were executed for their beliefs.
Quakers (or Society of Friends)