<P> Leche caspi (sorva) </P> <Tr> <Td> Moraceae <P> Leche de vaca </P> <P> Niger gutta </P> <P> Tunu (tuno) </P> </Td> </Tr> <P> Leche de vaca </P> <P> Tunu (tuno) </P>

Who invented chewing gum and when was it first used