answer and explanation:
The barons presented the Manga Carta to King John because the barons wanted to reduce King John's powers because King John raised taxes and gave himself more power so the barons created the Magna to reduce his powers.
Indus Valley - Wheat and Barley
Fertile crescent - Sorghum, Seedless figs and other cereals.
Central America - Maize
Sub-Saharan Africa - Yams, and Millet
