Daniel Hale William openned the firat interracial staff hospital. He was the first one in performing an operation on a human heart. He succeded even when there were no blood transfusions, antibiotics or x-rays. He was able to change tactics if he saw that he needed to do that. For example, he was one of the first ones in using the catgun.
Explanation:
industrial revolution led to bigger concentration of populations in cities & labor
False.
At the top of the social circle in Spanish colonies were the peninsulares. They were persons of pure Spanish ancestry who were born in Spain and moved to the New World/Americas.
Spaniards who were born in America but still had Spanish parents were called the creoles. Only difference between them and the peninsulares was that the creoles couldn't have jobs reserved for the peninsulares.