Many historians believe that the Roman Empire grew too large in too short a time. When faced with trying to rule the entire Mediterranean world, the empire eventually fell . The main reason for this was because the Roman

A. economic system could not support large foreign populations
B. military system was not designed to go on long campaigns.
C. government system was not designed to control such a vast area.
D. agricultural system could not feed large numbers of people.​​

A

Explanation:

just did that assesment;)

i believe the answer is:

-   william jennings bryan is a democrat while mckinley was a republican

at that time, the segment of population that choose for democratic party were the voters with low economic background and vice versa

- william jennings has support of populists and wants to have inflation to farmers while mckinley has support of bankers and businessmen , doesn't want inflation

the fixed value of gold make the large business able to stack up their gold without   being worried that it would devaluated.

- william jennings supported the silver standard while mckinley supported the gold standard

according to jenning, using other metal beside gold could the poor people to have more purchasing power and them advance in the society.