Major accomplishments of the Second Continental Congress:
On June 14, 1775 they established the Continental Army. They made George Washington General of the Army.
On July 8, 1775 they tried again for peace by sending the Olive Branch Petition to the King of Britain.
On July 4, 1776 they issued the Declaration of Independence declaring the United States as an independent country from Britain.
On June 14, 1777 they passed the Flag Resolution for an official United States Flag.
On March 1, 1781 the Articles of the Confederation were signed creating a real government. After this, the congress was called the Congress of the Confederation.