Answer:
1. The desire to find new markets
2. Industrial need for raw materials
Explanation:
Given that Imperialism is a form of governmental policy in which a nation seeks to directly dominate another country through the direct takeover of its territory resulting from political and economic control of the country.
Hence, in this case, the economic factors that led to the rise of imperialism are:
1. The desire to find new markets
2. Industrial need for raw materials
On the other hand, option A Advancements in transportation technology is a technological factor.
Option C The fall of American industry, is not applicable
Option D Less access to transportation routes is also not applicable.