The Sumerians had built entrances on there roofs because The flat roofs were thick layers of earth on top of strong beams. This made the houses nearly or actually fireproof, and places of security.
I think D but im not really sure
Answer:
Most definitely slowed down the pace of the war tremendously.
Explanation:
The nature of trench warfare made it almost impossible for either army to overtake the other. Attacking infantry was slowed down by the barbed wire and bombed-out terrain of No Man's Land, making the element of surprise unlikely. Later in the war, the Allies did succeed in breaking through German lines using the newly-invented tank.
The Old Immigration Wave was a group of people that were actually immigrants themselves whereas The New Immigration Wave can be people who weren't immigrants but there family members were or ancestors.
Answer:Black soldiers served in artillery and infantry and performed all noncombat support functions that sustain an army.
Explanation:Black soldiers served in artillery and infantry and performed all noncombat support functions that sustain an army, as well. Black carpenters, chaplains, cooks, guards, laborers, nurses, scouts, spies, steamboat pilots, surgeons, and teamsters also contributed to the war cause
