The history of the act, How this bureau fits into the bigger

I want one page of research about this topic, please. 

Bureau of Land Management’s Wild Horse and Burro Act. 

please don't forget to answer these three questions on the research page. 

1. the history of the act.

2. How this bureau fits into the bigger picture of land management

3. Possibly information on the person who pushed for this act.

also don't forget the work cited page. I need three sources no problem if it's more than three.