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Monroe Doctrine
To stop Europe from colonizing more of American land -
Mexican American war
War between American and Mexico -
Republic of Baja California
Mexico eventually annexed it, but it was part of America -
Seward Purchases Alaska
The Secretary of State bought Alaska for 7.2 million dollars and it ended up helping America with oil and natrual resources -
Annexation attempt of the Dominican Republic
Grant tried to annex the dominan republic but failed due to lack of support from the senate -
US obtains the 3rd largest navy
US became a world superpower -
United States annexes Hawaii
In 1950 Hawaii became a US state
