The answer is secondary source because the historian may be an expert but he would have to be present in the event/topic to be considered a primary source. Another example of secondary source is history books because they detail events accurately but the books are not from when the event occurred.
I’m confused what are you trying to say? please elaborate?
Canals are man-made, meaning, they are Human Systems.
Faults are natural, meaning, they are <span>Physical Systems.
Floods are not created by man, meaning, they are </span>Physical Systems.
Bridges are man-made, meaning, they are Human Systems.
I hope this helps!
Jamestown was established in 1607, 13 years earlier than Plymouth.
