By 1805, how successful had Napoleon been in his efforts to build an empire?

By 1805, how successful had Napoleon been in his efforts to build an empire? He won many military victories. ... Napoleon sent forces sent troops to Portugal to get them to accept the Continental System.

Explanation:

the answer to your question is a. the salt plains

in 1811, he led an expedition, known as the george c. sibley expedition, to improve relations with the pawnee and kansa tribes, and also to locate the rumored jefferson's salt mountain