<span>An increase in scientific and medical discoveries improved life expectancies.
</span>The best possible explanation for the changes in Europe's population since 1750 is that an increase in scientific and medical discoveries improved life expectancies.In fact, it was around this type that basic hygiene norms were implemented, as well as some mortal diseases were cured or to improve lifbetter treated. Moreover, the discovery of vaccinations helped greatly to improve life expectancies.
The correct answer is:
B. George Marshall.
George Catlett Marshall Jr. (1880–1959) raised through the United States Army to become Chief of Staff under presidents Franklin D. Roosevelt and Harry S. Truman. Then he served as Secretary of State and Secretary of Defense under Truman.
Winston Churchill lauded Marshall as the "organizer of victory" for his leadership of the Allied victory in World War II. Marshall guided the build-up of the U.S. Army from a force of little more than 200,000 in 1939 to a mobile army of more than 8 million soldiers and airmen that would fight around the globe during World War II.
Answer: April 15, 1865 is the answer
Vice President , speaker of the HOR(house of representatives), then the president pro tempore of the Senate
He was a leading American railroad developer and speculator. He became very rich off of the railroad business.