Africa the world’s second largest continent evolved from nomadic tribes to sedentary communities and then to powerful empires. Ghana, Mali, and Songhahi were all empires that relied heavily on trade of salt and gold, powerful militaries, and Islamic influence to become powerful empires.Ghana became a powerful state when it gained control of valuable trade routes with the help of a strong military.The empire of Mali reached its height under the ruler Mansa Musa, but the empire fell to invaders in the 1400s.The Songhai built a new Islamic empire in West Africa, conquering many of the lands that were once part of Mali.
Hello! I believe your answer to 23 is B. The majority are arabs
Answer:
A pulley is a circular disc having groove along it's circumference.
wheel and axle is an arrangement of two co-axial cylinders with different radii in which one rotates to give the rotation to another
The correct answer is B.
When you think of a curtain, it always divides something, even in its most literal sense (it divides a window from a room). The Iron Curtain was a specific ideological division between the Soviet Union and the West during the Cold War.