3, because Mexico did not want to have to fight America for it. Hope this helped!
Answer:
The Monroe Doctrine was successful in keeping the United states out of European affairs because after it was issued there was a decrease in foreign conflict for nearly 100 years until WWI.
Explanation:
Answer:
Unlike earlier immigrants, the majority of the newcomers after 1900 came from non-English speaking European countries. The principal source of immigrants was now southern and eastern Europe, especially Italy, Poland, and Russia, countries quite different in culture and language from the United States.
The Louisiana Purchase was actually a pretty shady deal. Jefferson bought it from the french without the approval of the people. His goal was that he wanted to expand the territory of the U.S. Previously the american people wouldn't go past the mountain range for fear of foreign colonies and native Americans. This purchase also ended up opening a trade route from coast to coast. While technically Lewis and Clarke went farther than they were supposed to, there was no one that could really contest them.
