OSHA and the EPA

What were the driving forces behind the creation of the FAA and ICAO?  This question is pertaining to the airline versus FAA safety responsibilities. How do these organizations differ in the effort for safety?
You must include the reasons for your answers. In fact, the rationale supporting your answers may be more important than the actual answers.
Part 2:
Discuss the differences between OSHA and the EPA that are relevant to aviation, cite some examples. You must have a title page and two references
This assignment will use the following APA format:

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Short paper 1-2 pages
1″ margins
12 pt. Times New Roman font
Include name on the front page