What three things may have played a role in starting world war 1?

How did testimony such as this from the triangle shirtwaist factory disaster affect the workplace?

What did jesuits and the leaders of the council of trent have in common? they wanted to improve relations with protestants by making compromises. they were opposed to improving spirituality within the catholic faith. they accused people of heresy and witchcraft. they were concerned with improving religious education.

Who led the continental army in the final decisive battle of the revolutionary war at yorktown