they used to grow crops such as maize and other fruits
You need to specify percentage as a function of something. Examples: Percentage of total land being used for agriculture, percentage of GDP produced by agriculture, percentage of population involved with agriculture, percentage of crops which are field crops as opposed to orchard or nursery crops, etc.
It is used to grow cotton crops.
carbon
25%
It is South Carolina
It costs less to grow crops with slaves who don't have to be paid, than it does to grow crops by hiring people to work on your plantation.
It used slave labor to grow cash crops for the world market.
they used water and cow manure to fertilize the crops just right
Most of the West African farmers grow crops on community land. Villages have small land patches where anyone in the village is free to grow crops. A lot of the crops are used for subsistence.
They were Used to plant crops and make them grow better
They used it for water, food, and when it helped grow crops.