Question

how did Douglas make sure that he conquered the old terror​

Answer 1

Answer:

To make sure he had conquered fear, Douglas went to Lake Wentworth in New Hampshire Dived in and swan two miles across the lake to Stamp Act Island. Only once when he was in the middle of the lake, did the terror return.

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Answer 2

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After the instructor had trained,Douglas swam on lake Wentworth.Once when the terror returned, he challenged it and didn't let it overcome him.Finally he swam on the warm lake.