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Smalls used his navigation skills to serve as a blockade-runner for the Confederacy, helping to keep trade lines open and supplies moving into the South.

Explanation:

2nd question

new evidence is discovered.

oversights and errors are corrected,

new technology is applied to evidence.

this forms a narrow, steep sided inlet (sometimes deeper than 1300 metres) connected to the sea. the terminal moraine pushed down the valley by the glacier is left underwater at the fjord’s entrance, causing the water at the neck of the fjord to be shallower than the main body of the fjord behind it.