Answer:
D. They have used irrigation to carry water from rivers to crops.      
Explanation:
Irrigated agriculture is widespread in North Africa, about 28% of farmlands in North Africa are irrigated. For example, Libya has the largest irrigation project in the world, called the Great Man-Made River which supplies farmlands across Libya with freshwater for cultivation.
People in North Africa essentially, irrigated farming to make their land more suitable for agriculture.
 
        
                    
             
        
        
        
Harappan civilization forms an important landmark in the prehistory of the Indian subcontinent. The civilization offers an excellent example to the modern world in various ways. Their expertise in town planning, water management and harvesting systems as well as drainage mechanism is unparalleled.
        
             
        
        
        
<u>Answer:</u>
Acceleration can be defined as the rate at which velocity is changes by an object.
<u>Explanation:</u>
Acceleration is a quantity of vectors which is characterized as the rate at which an entity shifts its velocity. An object accelerates when its velocity is shifting. The acceleration unit is meters per second squared. As velocity is a speed and a direction, two methods from which one can accelerate: change your speed or change your direction or change both.
If one don't change its pace and also donot change its direction then he or she simply won't be able to accelerate, no matter how quickly one go. Therefore, a jet traveling at a constant speed of 800 miles per hour along a single direction has zero acceleration, although the plane goes very fast, as the speed is not increasing.
 
        
             
        
        
        
Answer:
The major downfall of the Articles of Confederation was simply weakness. The federal government, under the Articles, was too weak to enforce their laws and therefore had no power. The Continental Congress had borrowed money to fight the Revolutionary War and could not repay their debts.
Explanation:
I hope this help
 
        
             
        
        
        
Answer: Kush flourished between c. 1069 BCE and 350 CE.
Explanation: