His discovery of the role of oxygen. He recognized and named oxygen and hydrogen and opposed the phlogiston theory. He helped construct the metric system, wrote the first extensive list of elements, and helped to reform chemical nomenclature.
Answer:
by the United States during World War II.
Explanation:
The first nuclear weapons to be used against another nation were dropped by "the United States during World War II."
This is evident in the fact that during world war 2, the United States B-29 bomber plane otherwise known as the Enola Gay in August 1945, dropped its first nuclear bomb over the city of Hiroshima, Japan.
The nuclear bomb led to the death of about 140,000 people in the city.
Answer:
The U.S provides countries with assistance in fighting against infectious diseases
Answer:
Differences in culture were causing issues.
Explanation:
