<Tr> <Td> Argentina </Td> <Td> 25 May </Td> <Td> First Patriotic Government, the Spanish viceroy is removed and replaced by the Primera Junta during the May Revolution </Td> </Tr> <Tr> <Td> Argentina </Td> <Td> 9 July </Td> <Td> Declaration of Independence, from Spain in 1816 </Td> </Tr> <Tr> <Td> Armenia </Td> <Td> 28 May </Td> <Td> Republic Day, independence from the Transcaucasian Democratic Federative Republic 1918 </Td> </Tr> <Tr> <Td> Armenia </Td> <Td> 21 September </Td> <Td> Independence from the Soviet Union recognised in 1991 </Td> </Tr>

Why do we celebrate certain national and international days