How does the United States preserve natural land, wildlife, and historic treasures today? (ex. the Grand Canyon) through the National Reserve for Historic Preservation

through a system of hundreds of national parks and monuments

through laws against destroying land, animals, and treasures

through a system of state and local agencies

B-Through a system of hundreds of national parks and monuments

Explanation:

it was made because he wanted to try to make people convert as well people who would have read or studied this item at the time it was created were probably people who wanted to change religions who thought conversion was a good idea.

the dust bowl, otherwise known as the dirty thirties, was a huge dust storm that killed multiple (and i mean  multiple) farmer's crops, leaving them homeless, and foodless, and jobless. in california, there were 5.7 million residents, and the population shrank as mexicans were repatriated. however, when the dustbowl happened, a lot of people began to move to california. by 1940, 250,000 people had arrived. therefore, your answer would be  the population increased, massively.  i hope this !

explanation: