Answer:B. The NPS manages ecosystem health while the USFS manages resource use.
Explanation:
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Simply, they united because coming together would be the only way to defeat Persia, or else they would lose separately. Hopefully this helped!
He wrote a book "Benjamin Benneker: The Astronomer and Mathematician" And he invented America's First clock
<span>The Italian scholar Francesco Petrarch (1304-1374).</span>