For access to more resources, spreading ideologies (white man’s burden)
I don't know, what are your choices?
According to John higginson C.
We learned how to read ancient hieroglyphics when after Napoleon's troops discovered the Rosetta Stone, which had translations of the hieroglyphics in Ancient Greek, which many people knew how to read.
Indus Valley - Wheat and Barley
Fertile crescent - Sorghum, Seedless figs and other cereals.
Central America - Maize
Sub-Saharan Africa - Yams, and Millet