Which was a factor in the development of a two-party system in elections?
A. great satisfaction with the historical selection of candidates from the successful Virginia political scene
B. a belief that education and virtuosity were the most important qualities in a candidate
C. Southern concern over potential abolition of slavery by the dominant political party
D. widespread agreement that banks should be organized into two "tiers," at federal and state levels
E. the financial crisis of 1819, and debate over how banks should be organized
F. an ongoing debate over tariffs and which part of government should levy them

Its E

Explanation:

Protective tariffs  were a key element of the American system. These are tariffs that are enacted aiming to protect a domestic industry. Protective tariffs seek to make imported goods cost more than equivalent goods produced in the country, leading to the rise of sales of domestically produced goods; supporting local industry. Tariffs are also imposed in an attempt to increase government revenue, or to reduce an undesirable activity.

Explanation:

the award is named for an american naval historian and theorist, rear admiral alfred thayer mahan, united states navy who, through his writing, provided stimulus and guidance to those who share in the defense of the nation.