List and explain 10 Events from 1620-1865 that contributed to the formation of the United States of America as a people and a Nation.

List and explain 10 Events from 1620-1865 that contributed to the formation of the United States of America as a people and a Nation. Events should not be broken down into parts. For example, wars begin with causes, include battles and end with the peace treaty. Instructions: Number the events. Number and name the event, write a brief description, and most importantly, include your reason for choosing this event.