Lincoln believed that slavery should be abolished at all costs. He believed it was wrong for one person to own another.
TRUE.
According to the Comparative Advantage Theory, countries should export to other countries products that they produce effectively and efficiently and import those products that they are not able to produce as efficiently. Thus, they should specialize by designating their scarce resources to make goods that will provide them with a comparative cost advantage.
Iron Ore, ivory and gold mines.
The advantage of iron helped Nubia by due to which they are able to make tools and plows rather than making out of copper or granite. With the help of efficient tools, the Nubia able to grow more grain and other crops which prospered their agriculture.
Nubia soldiers also produced iron weapons, which increased their fighting strength. Natural resources made Meroe a great trading city of Nubia because the city carried extensive deposits of iron ore, gold mines and trees which were used to fuel stoves for producing iron.