Answer:
A. prevent another world war
Explanation:
I just did the test and it said A was the answer.
Answer:
would commit if dishonore
hope it is helpful to you
Vietnam War is definitely one I'm not sure about the other two though
Louisiana purchase 1803
Lewis and Clark exposition 1804-1806
Missouri compromise 1820
Indian Removal act 1830
Oregon trail 1830-1843
Mexican American war 1846-1848
California goldrush 1849
Kansas-Nebraska act 1854
Homestead act 1862
Transcontinental Railroad 1863-1869
Klondike Goldrush 1896-1899