Answer:
A & B
Explanation:
They used their new food to increase their population and then spread their knowledge to all of Africa. More food meant bigger populations, which led to cities.
Answer:
it is estimate 2050 we will prouduce 29.4 billons tons
Explanation:
Because the world is not flat. It is a sphere.
The Farmers in the 1800s needed to borrow large sums of money, If the inflation lowers the value of money it makes it easier for the farmer to pay off the loans.