Colombia threatened to attack US workers if they began work on a canal.
It wasn't so much that they threatened to attack, but that they rejected the treaty that would have allowed the US to work there. However, that answer is the most correct given the circumstances.
Answer:
C.) choose a research design or method.
Explanation:
This is the best answer because right after reviewing the literature, he developed a hypothesis so he has to choose a research design or method.
Answer:
The Seventeenth Amendment
Explanation:
The Seventeenth Amendment to the constitution of the United States established that the senators of the United States will be selected the people of the State instead of being selected by state legislatures. This Amendment replaced the Article I, Clauses 1 and 2 of the original constitution, which allowed the state legislatures to select the senators.