Substitutes
replacement goods
No not by that. They had things that each other would use and they helped them by giving it to each other.
The other colonial countries are exporting goods from each other so everytime they get goods from other countries, they're basically returning the favor of goods.
Utility gained with each individual unit of a good that you purchase is called
Market
productivity
The vast majority of goods are not related to one another and are called independent goods. Examples are butter and golf balls, potatoes and automobiles, and bananna and wristwatches. A change in the price of one has little or no effect on the demand for the other.
This is called rationing
Rationing.
The place where two tectonic plates move away from each other horizontally are called divergent plate boundaries.
No not by that. They had things that each other would use and they helped them by giving it to each other.
I think its called a contact
Fault lines
The other colonial countries are exporting goods from each other so everytime they get goods from other countries, they're basically returning the favor of goods.
Utility gained with each individual unit of a good that you purchase is called
Market
The Egyptians used the Nile river to push sailboats to transport goods to each other and to other.
They are called a Plate Boundaries :)