16) Which of the following is descriptive of Roosevelt's conservation efforts? A) prohibited alcoholic beverages, B) declare war on Korea when the government there attacked U. S. missionaries. He fired Gifford Pinchot from the US, Forestry Service when he was found guilty of bribery. D) He saved the Grand Canyon from development and set aside land for national parks

D) He saved the Grand Canyon from development and set aside land for national parks

Explanation:

President Theodore Franklin Roosevelt was known as the Conservative president and part of his efforts at conservation saw him have a National Park named after him after he saved the Grand Canyon from development and set aside land for national parks.

c, they united with once

the answer is a, salt plain