15. Which economic activity most often required workers to settle in an urban setting? a. Farming
b. Manufacturing
c. Mining
d. Fishing tant trade

In an effort to japan recover from the devastating effects of the 1929 depression, japanese military leaders in the 1930s formed an alliance with nazi germany negotiated more trade treaties with the soviet union closed its doors to western trade adopted a policy of imperialist expansion

One disadvantage that darwin faces today is w. enemy attacks x. natural disasters y. lack of land bridge z. high population density

What does the plate tectonic theroy describe?