Explain the significance of choosing the 49th parallel as the boundary between Canada and the United States.

Great Britain wanted a border that followed the Columbia River to the Pacific  Ocean.

Since 1818, the US and Britain jointly occupied the territory that is now Oregon, Washington, and Idaho and parts of Montana, Wyoming, and British Columbia. Once the boundary was established at the 49th Parallel, the United States officially expanded to the West Coast.

Explanation: Took the quiz

southerners, for their part, considered brown a terrorist. they felt threatened by northerners' deification of brown and worried about the potential for other, similar armed insurrections.

explanation:

answer: (fluidity)is the correct answer.

explanation: because of this characteristic, success on the battlefield depends in large part on the ability to adapt to proactively change events to our advantage as well as to react quickly to constantly changing conditions