Question

By 1860, the number of miles of railroad tracks throughout the United States had risen to
A. 3,000
B. 30,000
C. 300,000
D. 3 million​

Answer 1

Answer:

B) 30,000

Explanation:

By 1860, the railroads were risen to 30,000 miles. In the 1870s, the railroad construction raised dramatically and prior to 1871, approximately 42,000 miles of track were laid.

Answer 2

B one is the right answer take care ok