What causes exchange rates to change? A.
The World Bank sets the rates each day.
B.
The Chinese government sets worldwide exchange rates.
C.
The rates change when nations decide to use a bartering system.
D.
The rates change based on the supply of and demand for different currencies.

descendants of muhammed

the american revolution was by the middle and upper class, and the french was by the lower and middle class.

the steam engine.

the locomotive.

the telephone.

the telegraph.

the internal combustion engine.

the rifle.

ironclad ships.

electricity/light bulb.

declare war, appoint military officers, sign treaties, make alliances