Answer:
Youngest: Niger
1. Niger — 50.12% under 15.
Oldest: Japan
Japan has the highest old-age dependency ratio of all OECD countries – there is one person over 65 for every two people between the ages of 20 and 64.
Explanation:
The main crops are beans, sesame, cashews nuts, cassava, cocoa beans, ground nuts, gum arabic, kola nut, maize or corn, melon, millet, palm kernals, palm oils, rice, plantains, rubber,soybeans, sorghum and yams.
Donald Trump building a wall.