Answer:
The answer is a bridge.
Explanation:
A bridge is made and built to go over rivers, not naturally made by the earth, therefore it is not a landform.
Answer:
B. Insight
Insight is the understanding of a specific cause and effect within a particular context which is being used when presented in a desirable way
The Northwest Passage is a sea route<span> connecting the northern Atlantic and Pacific Oceans ... Explorers </span>thought<span> that an open </span>water route<span> close to the North Pole must exist. ... While searching for </span>him<span> the McClure Arctic Expedition discovered the ... the Northern Sea </span>Route<span>), making it possible to </span>sail around<span>the Arctic ice cap.</span>
The swamp is about 10,000 yeats old, its oldest inhabitants were native americans.