Weather, local tribes such as local Indians, and viruses
The correct answer is option C: someone diagnosed with smallpox.
The person that would have been most grateful for the work of 19th-century scientist Edward Jenner, would be someone diagnosed with smallpox because Jenner was who discovered the first vaccine against the smallpox virus. Moreover, this disease that was widely spread in the 18th century and killed many people.
Answer:
glory, gold, and god
Explanation:
God was a very popular motive for exploration
Gold is what everyone searched for in exploration
Glory is what everyone strived for.
B. The fear that communism would fail in the United States
