Is life that exists only off our planet,
No aliens have been seen/found yet, but it is a strong theory as the universe is very large.
        
                    
             
        
        
        
The American Revolution was between April 19,1775 to September 3,1783
        
             
        
        
        
<span>Although India has only 16 official languages, the people there speak more than 30 languages. The correct option among all the options that are given in the question is option "A".
"</span>People in most societies cannot improve their status" is the one among the following choices given in the question that is true of social classes. the correct option is option "A".
        
                    
             
        
        
        
Mariana Islands and Puerto Rico
        
             
        
        
        
A group of people with inherited physical characteristics that differentiate them from another group is considered a race.
Race is defined as "a group of people who share certain distinguishing physical characteristics." More broadly, ethnicities are "large groups of people classified according to common racial, national, tribal, religious, linguistic, or cultural origin or background."
Race and ethnicity sociology frequently interacts with postcolonial theory and other areas of sociology such as stratification and social psychology. Ethnic relations are discussed in political policy terms in terms of either assimilationism or multiculturalism. 
Another policy style that was popular in the 1960s and 1970s was anti-racism. 
To know more about ethnicities here
brainly.com/question/674712
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