The correct answer is the option D.
As the United States entered the World War II they have started developing nuclear projects under the orders of the president Harry Truman. WW2 represented a massive arms race and president Truman believed that the Nazis have started developing a nuclear bomb, so he ordered that the US began the same project immediately in hopes of finishing before the Nazis.
One very famous, perhaps the most famous way was through improvised vaccination. Specifically, George Washington ordered his healthy men to be injected with substance taken from the wounds of the sick men during a smallpox infection.
A risk was that those men would get sick just like the the sick men did, but the the potential reward would be that they would get sick in a controlled way and that they would be able to fight this disease.
1: Build larger armies
2: Introduce new government officials
3: increases taxes
<span>The main reasons for adopting the new calendar included those that were secular in nature. The secular nature was that church was not as big of a part of people's lives, and this was reflected in the creation of the new calendar. The calendar replaced the Gregorian calendar which was religious in nature and did not focus on scientific ideals.</span>
