How did tobacco plantations affect the land? a. tobacco was easily grown and plantations could last for decades in the same area. b. tobacco exhausted soil, so that planters often had to find new land. c. tobacco plantations enhanced the look of urban cities, making them more appealing to live in. d. tobacco plantations were often sold to native american tribes after three years.

B. Tobacco exhausted soil, so that planters often had to find new land.

Explanation:

I studied on the subject, took the test and got the answer correct

lincoln won 212 electoral votes to mcclellan's 21 votes, and lincoln beat mcclellan. is the main reason lincoln won in 1864.

offline recommendation systems option b

because recommendation systems produce a list of two ways

1. through collaborative filtering

or

2. through content-based filtering