China instituted a one-child policy in 1979 because the government recognized that the population in the country is rapidly growing. The One Child Policy is their only solution to decrease the population growth in order to avoid getting stuck in more social and economical problems in the future brought by overpopulation.
        
             
        
        
        
The United States gained control of the former Spanish colonies by going
to war with Spain over Cuba, or more specifically, Cuba's independence.
Together with the filipino rebels, America won against Spain and gained
control of multiple colonies including puerto rico, guam and the
phillipines.
        
             
        
        
        
Budget surplus is the situation when revenue exceeds expenses
 
        
             
        
        
        
Answer:
Yes gender traits completely a result of societal expections. If we don't know the gender of anyone then how we can help to them. If we will know the gender we can easily help from their thing. There are two types of gender Male and Female. So  gender traits completely a result societal expections. 
Explanation:
 
        
             
        
        
        
The ability of people to produce is determined by their skill, knowledge, and training. An<span> individual or group of individuals is able </span>to produce<span> goods and/or services. But how efficient is determined by the knowledge (academic knowledge but also skill obtained during everyday life).Also certain types of production need certain training. </span>