Humans have adapted to live on which type of these landforms? select all that apply.

a. plains
b. valleys
c. plateaus
d. mountains

Match the following items. 1. free enterprise system 2. mixed economy 3. the former soviet union 4. land and capital (a) private and state ownership of business (b) factors of production (c) private ownership of capital (d) command economy

Prices for products became more affordable as a result of new forms of ,witch got things to market faster and cheaper

What period of history refers to the time when people did not have written records