Which factors were most responsible for the economic development of the north during the early to mid-1800s?
a. large forests, abundant cash crops, and mineral resources
b. vast stretches of land, rich plant life, and humid climate
c. fertile soil, frequent rainfall, and warm temperatures
d. safe harbors, cool weather, and rocky soil

A) Large forests, abundant cash crops, and mineral resources

Explanation:

South America has different agricultural products rich in minerals and plenty of freshwaters. It additionally has productive fisheries and ports on three waterways: the Caribbean Sea, the Atlantic Ocean, and the Pacific Ocean. The mainland's economy is focused on the fare of natural assets.

Two significant cash crops are espresso and cacao, which is the wellspring of cocoa, the base fixing in chocolate. Brazil is the world's biggest exporter of espresso, and it used to be probably the biggest exporter of cacao

2. a land bridge connected asia and north america thousands of years ago.

4. crossing the land bridge would have been simple for the first migrants.

5. people might have crossed a land bridge while hunting animals.