Answer: B
Primary sources are basically written by people who had first hand experience with what they are writing about
Answer: Market econome
Explanation:because they are selling what the person want.
Polk was a massive supporter for Manifest Destiny, so an encouragement for expansion was something he definitely wanted. Not to mention the conflict over Texas with Mexico. Even more so, the conquest of California was a dream for many Americans, something that was theirs to be taken and that would lead the U.S to expand into the Pacific, and Polk was a big supporter.
The answer to your question is either A or B
The ottoman and austro-hungarian empires ruled eastern europe until the end of world war 1
