21. What impact did technological advances have on industry?
A Production of goods was increased.
B. Quality of products was decreased.
C. Number of factory workers decreased.
D. All of the above are true.

Production of goods was increased.

Explanation:

The technological advances allowed the workers to create more products. For example, the cotton gin let a worker separate 50 pounds of cotton in one day. Before the cotton gin, they would only separate 1 pound of cotton per day.

the answers are 1 and 4

d. promised it other land