D. is the answer became independent
Vietnam was ruled by France during the 1800s. 1887 to be exact until Vietnam declared its independence in 1954.
too much government control
A major negative effect of the Progressive era was too much government control which led to political corruption in both the state and national level. Powerful politicians became overpowering to the interest of the public resulting in ineffective government
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 there<span>were 15 transcontinental railroads. ]</span>