Anation allowed its currency to be valued based on supply and demand. this is known as a exchange rate

A nation allowed its currency to be valued based on supply and demand. This is known as a "floating" exchange rate.

A floating exchange rate alludes to changes in a money's esteem in respect to another currency (or currencies).  

Floating exchange rates imply that monetary standards change in relative esteem constantly.  

In a Floating exchange rate system, when the interest for a cash is low, its esteem diminishes similarly likewise with some other item or administration. Yet, the consequence of a degraded money is that foreign made merchandise appear to be increasingly costly to the general population holding that cash.

the correct answer is:

it required the president to inform congress within forty-eight hours of any new troop commitment.

the war powers resolution (1973) is a federal law designed to limit the u.s. president’s ability to initiate or intensify military actions abroad without the approval of the congress.

it establishes that the president can send armed forces into action abroad only by declaration of war by congress, statutory authorization, or in case of a national emergency created by attack upon the united states, its territories or possessions, or its armed forces.

it requires the president to notify congress within 48 hours of sending armed forces to military action.