What historical development led to the description in the passages

Northwest Passage is one of the historical sea passage of the North American continent.

Explanation:

This passage represents the centuries of struggle so as to find a westward route to the Pacific Ocean from the Atlantic Ocean through the Arctic Archipelago (group of Canadian islands).

The quest for a passage route was one of the greatest challenge for the mariners. Since the end of the 15th century explorers have attempted to establish commercial sea route around the American land barrier which Christopher Columbus.

b)

it created free trade throughout the colonial territories.

slavery because it wasnt a role of government