For access to more resources, spreading ideologies (white man’s burden)
Answer:
In 1865 President Andrew Johnson implemented a plan of Reconstruction that gave the white South a free hand in regulating the transition from slavery to freedom and offered no role to blacks in the politics of the South. ... The end of the Civil War found the nation without a settled Reconstruction policy.
Explanation:
The North was led by a communist regime under Kim ll Sung who was supported by the Soviets. The South was led by a nationalist Rhee who was supported by the U.S. Since both wanted to conquer the entire Korean Peninsula and both were aligned with different political ideologies, it wasn't too unreasonable that Kim decided to attack the South. As a result, America, who adopted a policy of containment under Truman, wanted to expel communist influence as much as possible, which led to America playing a role in mobilizing a UN force to support the South.
In order to build a hypothesis, Joan should take an educated guess at what the effect of adding salt to the water will be on the water's boiling point. For example, the hypothesis may be,
"The boiling point will increase".
This hypothesis is one that can be verified or rejected via experimentation. The next step for Joan would be to set up an experiment to test this hypothesis.
