"<span>c. Native American raids on work camps" would be the best option from the list, but the primary and most severe hardship was the rough terrain, which featured rivers, mountains, etc.</span>
Ancient egypt was a good one
<span>John Chapman (a.k.a. Johnny Appleseed) begins handing out apple seeds and seedlings to Ohio settlers in 1800.The U.S.
Library of Congress is founded on April 24, 1800.
<span>The United States and North African Berber Muslims fight the First Barbary War from 1801 to 1805 in an effort to halt Barbary pirates' attacks upon American merchant shipping.
I hope this helps.</span></span>