<Tr> <Td> Roaring Twenties </Td> <Td> 1920--1929 </Td> </Tr> <Tr> <Td> Great Depression </Td> <Td> 1929--1939 </Td> </Tr> <Tr> <Td> World War II </Td> <Td> 1941--1945 </Td> </Tr> <Tr> <Td> Postwar era </Td> <Td> 1945--1964 </Td> </Tr>

How did the federal government policies affect america's economic development in the gilded age