Which was built more in the 1800s—railroads or canals—and why?
a. canals- goods could reach ports in less time at a reduced cost.
b. railroads- more cities could access railroads and increase trade.
c. canals- steamboats were less dangerous than steam locomotives.
d. railroads- railroad workers were more readily available than canal workers.

B)Railroads - more cities could access railroads and increase trade. was built more in the 1800s.Canals was a short-lived era. [ Railroads beginning in the late 1830s and early 1840s were built because they were faster and more reliable than Canals which were often destroyed by washouts of the banks and floods destroyed many canals. The first transcontinental was completed in 1869, by 1900 therewere 15 transcontinental railroads. ]

Your answer is 2 because you do keep change flip when you divide fractions