Natural Resources: coal, natural gas, limestone, sand, gravel, salt, fresh water, timber, Industry: auto equipment, metal products, processed food, chemicals, machinery, Agriculture: corn, soybeans, wheat, hay, tomatoes, apples, grapes, maple syrup, dairy cattle, poultry, hogs, sheep,

Natural resources, Industry, or Agriculture?

排行榜

視覺風格

選項

切換範本

恢復自動保存: ?