C: Oregon became the first state west of the Rocky Mountains due to its rapid increase in population during the mid-1800s.
Both of the construction projects required a lot of manpower, so many unemployed men were hired.
D) a Congress and Supreme Court
<span>The question is asking "Which of these is an example of a "check and balance" power of Congress? ", Checks and balances are when one branch of the government can control and "check on" the other, and among the options it would be B) the presidential power to veto a legislation - this way the president can check on the Congress.</span>
THE ANSWER IS REFUGEES!!!!!!!!!!!!!!!!!!!!!!!!!
