<span>While World War I on the Western Front developed into trench warfare, the battle lines on the Eastern Front were much more fluid and trenches never truly developed. This was because the greater length of the front ensured that the density of soldiers in the line was lower so the line was easier to break.</span>
Hammurabi's<span> Code tells us that there was a social pecking order in ancient Babylonia in which nobles ranked above freedmen and slaves.</span>
The United States of America joined World War II when Pearl Harbor was bombed...if you're referring to the 2nd World War.