It affected them immeasurably because it enabled them to trade this surplus of food for things that they might need from other countries and thus get other pieces of technology or knowledge or anything similar. They could improve their state that way and that's how development of civilizations began.
Askia encouraged learning and literacy, ensuring that Mali's universities produced the most distinguished scholars, many of whom published significant books and one of which was his nephew and friend Mahmud Kati. To secure the legitimacy of his usurpation of the Sonni dynasty, Askia Muhammad allied himself with the scholars of Timbuktu, ushering in a golden age in the city for scientific and Muslim scholarship.[5] The eminent scholar Ahmed Baba, for example, produced books on Islamic law which are still in use today. Muhammad Kati publishedTarikh al-fattash and Abdul-Rahman as-Sadi published Tarikh al-Sudan (Chronicle of Africa), two history books which are indispensable to present-day scholars reconstructing African history in the Middle Ages.
the trapizoid one's area is 28 since 7 x 4 is 28 and you do multiply the slanted height
