As chief executive, a president must do which of the following? select all that apply.

The Constitutional power as "Commander in Chief" has evolved into the very important modern role of "crisis manager." In the 20th century, as the United States gained world leadership powers, the President has become a key player in international crises. In the case of war — such as the Korean War, the Vietnam War, and the Persian Gulf War — or less famous regional conflicts — such as those in Kosovo, Somalia, or Haiti — the President must go into "emergency mode" and concentrate on the immediate problem. Domestically, crises may occur — such as urban riots, hurricanes, or forest fires — that require the President to schedule time to coordinate government responses to the situation.

Marshall plan is the answer.