Pretty sure the answer is D, but it could also be C. A and B don't make sense for Napoleon.
Hope this helps
The answer to your question is B
Answer: Bull run
Explanation: The first battle of bull run (also known as the first battle
of Manassas) was the first major land battle of the civil war
It was Wealth. A factor leading to a weakening of the US economy, was the unequal distribution of wealth(money).