<Tr> <Td> </Td> <Td> Saxe - Meiningen (Sachsen - Meiningen) </Td> <Td> Meiningen </Td> </Tr> <Tr> <Td_colspan="3"> Principalities (Fürstentümer) </Td> </Tr> <Tr> <Td> </Td> <Td> Lippe </Td> <Td> Detmold </Td> </Tr> <Tr> <Td> </Td> <Td> Reuss - Gera (Junior Line) </Td> <Td> Gera </Td> </Tr>

What events occurred in the early 1800s that helped promote german unity