Which option most accurately assesses the significance of the louisiana purchase in relation to the era of westward expansion? a) it established trade routes to mexico b) it fostered the development of industry in the south c) it eliminated the need to trade with french fur trappers d) it doubled the size of the united states.

D. It doubled the size of the United States

Explanation:

While there is some truth to A, the correct answer is D. The purchase of the Louisiana territory doubled the size of the country and gave the US complete control over the Mississipi river. It also meant the end of a long tense relation with Spain and other European powers which used the territory as political leverage.

The purchase was ambitious, but Jefferson deemed it necessary to avoid any other power to purchase or acquire part of the territory. By controlling the Mississippi, the US guaranteed full and free access to the sea. Jefferson also took advantage of weakened Spain, briefly under French rule. The presence of Napoleonic troops in New Orleans helped Jefferson. The threat of a Napoleonic attack was too big, and the purchase seemed like the best way of preventing any threat.

b.

jim crow laws were enacted in northern states.

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