Answer: AIDS
The doctors have been looking for a cure for Acquired Immune Deficiency Syndrome, most widely known as AIDS since 1981. There has been vaccines for polio while other treatments for cancer however, there is way fewer cure for AIDS since then.
France played a key role in the American Revolutionary War (American War of Independence; 1775–1783).
John Locke was the individual who suggested the idea that if a government fails to protect its people's natural rights of life, liberty, and prosperity, the people have the right to overthrow it.
