Ghana, Mali, and Songhai were affected by the arid Sahara Desert, that created a natural barrier, the Niger River facilitated trade, travel, and provided fertile land for agriculture . The Savannas provided open lands for animals to be herded and graze, and land for the farmers to cultivate Ghana, Mali, and Songhai have many diverse geographic features that affected the rise and fall of their empires. Ancient Ghana or the “land of gold” existed from 750 CE to 1200 CE was positioned on the South
In the beginning of the book we read of a man named Jared Diamond, Jared Diamond is a Professor at UCLA, and he is fascinated with birds. His fascination is so great that he studies bird evolution on the island of New Guinea. In the year of 1972 he is asked a question by a man named Yali, Yali happens to be a local politician, (someone who is highly respected on the island.) Yali’s question was, “Why is it that you white people developed so much cargo and brought it to New Guinea, but we black people
The ever increasing demand for food and other basic needs has put a lot of pressure on the plant genetic resources (PGR) and diversity particularly in agricultural sector in terms of addressing the accompanied challenges associated with increasing crop productivity. The utilization of PGR in agriculture has not only brought about profound changes in the crop productivity and quality, but has also opened up newer and unforeseen potential vistas including improvement of novel traits by domestication