What factor led to the two different ways of life in the north and the south

The main factor was the soil and slavery. The soil in the north was too dry and rocky to grow crops consistently whereas the South's soil was rich with nutrients and grew crops easily. The main cash crops were tobacco and cotton.

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.