Americans typically believed that it was their divine right to take over colonies and land in North America. At the time the nation was very religious, thus why they emigrated here, and believed it was God's will for them to own the land and the colonies occupying them.
legal authority over colonies
The Mexican-American War.
Yes, Social Darwinist ideas were used to justify policies of imperial expansion by suggesting that it was natural for stronger nations to dominate weaker ones. This concept was applied to justify the acquisition of resources and territories through military conquest.
They thought that since they had protected the colonies in the french and Indian war, that they had the right to tax them to pay off the debt.
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To justify the expansion to the detriment of the native Americans.
yes
King George III had violated the rights of the Americans; therefore, they had the right to overthrow the government.
His justification was that the Colonies share some of the tax burdensince many believed the the Seven Year's War had been started by the Colonies and fought on their behalf.
President Jackson said that it would be in the Native American's best interest to be far away from white Americans.
The main argument used by the British to justify taxing the thirteen colonies was that the colonies benefited from British protection and military support during conflicts, notably the French and Indian War. British officials contended that the colonies should contribute to the costs of this defense and the administration required to govern them. They believed that the taxes were a fair way to ensure that the colonies shared in the expenses of their own security and infrastructure.
Open land inhabited by wildlife and Native Americans.