<Tr> <Td> Ghana </Td> <Td_colspan="2"> 18 </Td> <Td> </Td> </Tr> <Tr> <Td> Guinea - Bissau </Td> <Td_colspan="2"> 15 </Td> <Td> </Td> </Tr> <Tr> <Td> Kenya </Td> <Td> None </Td> <Td> 18 </Td> <Td> It is illegal to sell tobacco products to anyone under the age of 18 years . There is no minimum age to possess tobacco or smoke in public . </Td> </Tr> <Tr> <Td> Lesotho </Td> <Td_colspan="2"> 14 </Td> <Td> </Td> </Tr>

When did the smoking age become 18 in usa