Answer:
<h2>B. </h2><h3>how to use the phone
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Explanation:
I hope this helps
 
        
             
        
        
        
- Timbuktu, a trading city in central Mali, is still referred to as the most isolated remote location in the world. 
- Timbuktu started as a summer encampment for nomadic tribes of the region.
- During World War II Timbuktu was used to house prisoners of war.
- Today Timbuktu is very, very poor.
- Both droughts and floods consistently threaten the city. Flooding happens because the city doesn’t have an adequate drainage system to keep rainwater from building up.
- The movement of salt from the mines in the middle of the Sahara desert through Timbuktu to the Niger River is what Timbuktu depends on for its survival.
- Rice is the predominant crop grown in the area.
- It is about 15 km north of the Niger River. 
- In the 14th Century it became the commercial, religious and cultural center of the West African empires of Mali and Songhai. 
- Timbuktu’s greatest contribution to Islam and world civilization was its scholarship. By the 14th Century important books were written and copied in Timbuktu.
        
             
        
        
        
Answer:
reversibility
Explanation:
For Piaget, the cognitive development of the human being begins from the moment of his birth and becomes more efficient and comprehensive as this individual ages and his brain is trained more intensively. For Paiget, this development occurs at stages that are related to the age of the individuals.
Within this theory, Piaget, developed the concept of cognitive reversibility, which is the stage in which a child manages to develop logical thinking, where he is aware of size, quantity, movements and any other situation that is logical.
As we can see in the question above, the youngest nephew has difficulty understanding that if no material is removed from the ball, it will have no less material, even if it is rolled on a long surface. This is a logical concept that the child has a hard time understanding because his cognitive knowledge is still weak in reversibility.
 
        
             
        
        
        
Answer:
Oligarchy, more specifically Theocracies.
Explanation:
A theocracy is a system of government in which priests rule in the name of God or a god. Vatican City with the pope Francis has this form of government,  for example. 
 
        
             
        
        
        
While living on one's own, one is less likely to do regular medical check-ups, than when they are with their family. 
- A physical examination, tests, and a health history are typically included in routine medical checkups. 
 - Having a regular doctor is crucial because they can ensure that one gets the healthcare that is best suited to one's particular needs. 
 - Early warning symptoms of health problems can be found with regular health exams.
 - The doctor will ask about medical history, any family members who have had illnesses, and lifestyle, including your food, weight, level of physical activity, usage of alcohol, and smoking.
 - While there for another reason, the doctor might also perform a general health examination.
 - The frequency of one's health checkups can be discussed with the doctor.
 
From the above, it is clear that Regular Medical Check-ups is the correct answer. 
Learn more about Regular Medical Check-ups here:
brainly.com/question/14128830
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