The Second Continental Congress was the late-18th-century meeting of delegates from the Thirteen Colonies that united in support of the American Revolution and its associated Revolutionary War that established American independence from the British Empire. The Congress created a new country that it first named the United Colonies, and in 1776, renamed the United States of America. The Congress began convening in Philadelphia, on May 10, 1775, with representatives from 12 of the 13 colonies, after the Battles of Lexington and Concord. It succeeded the First Continental Congress, which also met in Philadelphia from September 5 to October 26, 1774. The Second Congress functioned as the de facto national government at the outset of the Revolutionary War by raising militias, directing strategy, appointing diplomats, and writing petitions such as the Declaration of the Causes and Necessity of Taking Up Arms and the Olive Branch Petition. All 13 colonies were represented by the time the Congress adopted the Lee Resolution, which declared independence from Britain on July 2, 1776, and the Congress unanimously agreed to the Declaration of Independence two days later.