Answer:
the use of poison gas and machine guns
Explanation:
Aerial attacks weren't really a thing, unrestricted submarine warfare was a reason why the US joined the war but not a factor in high casualty rates, and blimps using direct artillery fire isnt as practical as machine guns and poison gas
D) Egpyt
Egypt had the benefit of several domesticated animals, from sheep to cattle to horses. This naturally had huge implications for productivity, as agricultural and other finished goods, such as clothing, were easier to produce.
On April 21, 1898, the United States declared war against Spain. It would be the first overseas conflict fought by the U.S. It involved major campaigns in both Cuba and the Philippine Islands. ... Their quest was described as a "splendid little war" by Secretary of State John Hay
<span>The population of Europe declined by around 1/3 (like 27-33%) and most of which was the peasantry. This lack of peasantry didn't mean that the work they had to do was also diminished. They still had to do all the work, only with less numbers. This increased amount of labor lead to unrest in the societies in the Medieval era. They demanded a type of increased wage, or allowance of food/ration, and eventually gained some ground, which led a sort of Yeoman class, (emerging lower class) in England, and the bourgeoisie, for example, in France.</span>