What replaces the need for bartering? (In the sense of money )

Which of the following might cause the inflation rate to spike up sharply? the purchasing power of the average consumer decreases due to a sluggish economy. plentiful rainfall and moderate temperatures result in good harvests of wheat and soybeans. the items in the cpi market basket change to account for changing consumer buying habits. prices on world oil markets rise steeply due to war in the middle east.

How much time on average do americans currently spend watching tv and videos per day?

What is the name of the large desert that runs across north africa