What was a belief held by progressive reformers?
a. big businesses should be regulated by government to small businesses
b. regulations weren't needed to run an efficient economy.
c. america should take new territory from mexico
d. the spoils system was a great way to run government.
i believe that its a but im not too sure

The correct answer is A. Big businesses should be regulated by the government to help small businesses.

Explanation:

The Progressive Reform Movement was a movement based on social activism and reforms that took place from 1890 to 1920. The main purpose of this movement the Progressive reformers wanted to achieve was to stop some of the problems the industrialization, the immigration, and the corruption has caused in the U.S. In the case of the industrialization and politics Progressive reformers believed monopolies and other big corporations need to be regulated by a political power or government that was not corrupt and  in this way allow the equal competition in the industry. This means the big industries or business would not hog all the economy and the small business that were emerging will have the opportunity to compete. Thus, one belief held by the Progressive reformers was that "Big businesses should be regulated by the government to help small businesses".

i think it was   tsar alexander ii

c, because the american revolution was from 1765 to 1783.