The Western Front was marked by two phases of large-scale combat operations. The first phase saw the capitulation of the Netherlands, Belgium, and France during May and June 1940 after their defeat in the Low Countries and the northern half of France, and continued into an air war between Germany and Britain that climaxed with the Battle of Britain<span>.</span>
<span>At the very last that is just before the world war I, a petition called as the Jones-Shafroth was signed to grant the American citizenship to the Puerto Ricans in the year of March 2, 1917, They are mainly granted because they want to recruit them for the war as armed forces and soldiers.</span>
A strong national trade policy was created.
Answer:
Sometimes slaves are prisoners of war; while in other cultures, people convicted of crimes are sold into slavery. Still other times (as in the case of early-American slaves from Africa), societies plagued with poverty, overpopulation, or technological inferiority are either forcibly taken as slaves or willingly traded to more developed nations.
Explanation: