What is the primary economic activity in the caribbean?

Hey, i was what is consisted in a sustainable city? like what unique designs they have, etc. for answering ; )

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

How many active volcanos are there in nicaragua