Question

Coins were developed as a medium of exchange because other items like cows, grain, and land were more difficult to move from place to place true or false?

Answer 1

True, they used them because its easier to trade coins than products

Answer 2

That's true. Land is especially difficult to move :P. In addition, it's harder to measure the worth of something like a cow. Cows have many variables in their value, such as size, health, nutrition, etc. Establishing a monetary system that uses coins with set values helps to avoid that difficulty.