<Tr> <Td> Era of Good Feelings </Td> <Td> 1817--1825 </Td> </Tr> <Tr> <Td> Jacksonian Era </Td> <Td> 1825--1849 </Td> </Tr> <Tr> <Td> Civil War Era </Td> <Td> 1849--1865 </Td> </Tr> <Tr> <Td> Reconstruction Era </Td> <Td> 1865--1877 </Td> </Tr>

Explain the significance of regional differences during the era of good feelings