posted by Calvin .
The president's role in foreign policy increased largely because:
is it, we became more of a world power
That looks right, but do you have other choices to consider?
Congress proved so inept in foreign affairs that the American people demanded a change.
of the need to coordinate national economic policy and foreign policy, a task to which the presidency was well-suited.
Of the desire of U.S. business to expand into Latin America and Asia, which required executive action at the highest level.
Your first answer is right.