<Tr> <Td_colspan="2"> Displays of fireworks, such as these over the Washington Monument in 1986, take place across the United States on Independence Day . </Td> </Tr> <Tr> <Th> Also called </Th> <Td> The Fourth of July </Td> </Tr> <Tr> <Th> Observed by </Th> <Td> United States </Td> </Tr> <Tr> <Th> Type </Th> <Td> National </Td> </Tr>

When did fourth of july become a national holiday