Answer:
B
common sense
they always had fresh drinking water and a place to dump sewage
Answer:
<em>Option b. For nearly two hundred years, the Muslim Turks and the European Christians fought in wars called the Crusades.</em>
Explanation:
The Crusades were a set of religious wars fought between the Muslims and the Christians in order to secure control of places considered to be sacred and holy by both groups. The eight major Crusades expeditions took place between the years of 1096 and 1201, making the wars to last almost 200 years.
There are four main causes of WWI:
Militarism-Countries in Europe were continually building up their militaries, in order to look stronger.
Alliances-European countries were allied with each other, which caused all of Europe to break into war within a few days of Austria-Hungary declaring war on Serbia.
Imperialism-Wealth equals power, therefore, the more colonies you have, the more powerful you are.
Nationalism-Having pride in your country and thinking your country is the best, ignoring it's faults. Led to increased imperialism.
The Public Health Service Tuskegee Study of Untreated Syphilis in the Negro Male.
