The 13 stripes on the American flag represent the original 13 colonies that declared independence from Britain in 1776. The stars represent the number of states in the union. Their number has grown from 13, and became 50 when Hawaii joined the United States in 1960.
If a flag touches the ground, the condition should be remedied as quickly as possible. If the flag has become dirty, it should be cleaned with a mild soap before being re-flown.The United States Flag Code says the flag must be kept from touching the ground, but contrary to popular belief, it does not require the flag to be burned if this happens.