Look carefully at the graph at the right. What led to the jump in the number of US factory workers between1820 and1860? Pay increased because of inflation, attracting more workers. Industrialization created many new manufacturing jobs. Workers from the South moved to the North. The Northern Economy

Increase in industrialization

Explanation:

With the increase in industrialization, people left the agriculture and farming industries to go work in factories.

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.