<span>These senses may be exhibited as early as around the 6th month. When shown two shapes, one of which was considered the "helper" and one a "hinderer," the infant showed a willingness to spend more time playing with the "helper" shape than the "hinderer."</span>
        
             
        
        
        
Answer:
Due to lack of technology.
Explanation:
It took several centuries before the civilizations of the two hemispheres had communication because of lack of technologies that can make a bridge of communication between two hemisphere. People are not interested in research and having old wrong beliefs that prevent them from growth and development but due to renaissance movement people get rid of false and wrong beliefs and work for the advancement of technology which leads to communication between two hemisphere.
 
        
             
        
        
        
Answer: We as humans slightly continue the hunter gatherer lifestyle with hunting animals, fishing, and farming. We also have gardens which is from the creation of domestication of animals and the creation of agriculture.
Explanation:
 
        
             
        
        
        
<span>The effect of presidential coattail describes when a popular president running for reelection brings additional party candidates into office. This effect is brought about by the popularity of the presidential candidate who brings in supporters that will also vote for his/ her party's candidates. This is in relation to the idiom, ride on coattails, which means riding on another person's success. </span>
        
             
        
        
        
Answer: the application of basic moral principles might vary among different cultures and societies. 
Explanation:
Ethical Objectivism means that there are moral principles that are objective and universal and therefore valid for everybody. Such principles bind everyone together. 
If ethical objectivism is true, the application of basic moral principles might vary among different cultures and societies.