<Table> <Tr> <Th> 1941 in the United States </Th> </Tr> <Tr> <Td> <Dl> <Dt> Years </Dt> <Dd> 1939 </Dd> <Dd> 1940 </Dd> <Dd> 1941 </Dd> <Dd> 1942 </Dd> <Dd> 1943 </Dd> </Dl> </Td> </Tr> <Tr> <Th> Flag </Th> </Tr> <Tr> <Td> 48 stars (1912--59) </Td> </Tr> <Tr> <Td> Timeline of United States history </Td> </Tr> <Tr> <Td> History of the United States (1918--45) </Td> </Tr> </Table> <Tr> <Th> 1941 in the United States </Th> </Tr>

How many us states were there in 1941
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