How do developing countries today differ from traditional civilizations?

A) There is great inequality in developing countries today, while
traditional societies had low levels of inequality.

B)Developing countries do not depend on agriculture as their main
economic activity as traditional civilizations did.

C)Most developing countries are involved in trade with countries
around the world; at best traditional civilizations interacted with
bordering societies or civilizations .

D) Virtually all developing countries have free-market economies
whereas traditional civilizations had centrally planned
economies.