<Dl> <Dt> 1781 </Dt> </Dl> <Ul> <Li> January 17 - Battle of Cowpens </Li> <Li> March 1--Articles of Confederation ratified </Li> <Li> March 15--Battle of Guilford Court House </Li> <Li> September 5 - Battle of the Chesapeake </Li> <Li> September 6 - Battle of Groton Heights </Li> <Li> September 8 - Battle of Eutaw Springs </Li> <Li> October 19--The British surrender at Yorktown </Li> <Li> December 31--Bank of North America chartered </Li> <Li> December - Continental Army returns to Hudson Highlands and Morristown New Jersey for its seventh winter encampment . </Li> </Ul> <Li> January 17 - Battle of Cowpens </Li> <Li> March 1--Articles of Confederation ratified </Li>

What was the first act in the revolutionary war