Answer: cotton gin
Explanation:
Eli whitney created the cotton gin, it removed the seeds from cottton fiber
it was easier to take the fiber
Answer:
By 1860, 30,000 miles (49,000 km) of railroad tracks had been laid,.
By 1860, 30,000 miles (49,000 km) of railroad tracks had been laid, with 21,300 miles (34,000 km) concentrated in the northeast.
Answer: A.discussing the topic with other people
B.reading about the topic online or in books
C.understanding different viewpoints on the topic
E.organizing information about the topic into categories
Explanation:Hope this helps.
Because It joined Britain France and Russia because of disagreements in Europe over territories and boundaries.