![american conquest sioux american conquest sioux](https://i.pinimg.com/736x/b1/f7/b8/b1f7b871aea5ac2510e373db5291e060.jpg)
The Proclamation Line of 1763 was a boundary line that the British imposed on colonial expansion in order to honor a treaty made with North American tribes who sided with then during the French and Indian war. (I mention this specifically because you are referencing the 13 colonies and not, necessarily, early America, the nation, itself). A good example of this can be seen with colonial violations of the Proclamation Line of 1763. English, soon to be American settlers were notorious at breaking these treaties. One of the most important elements that are often forgotten by people who make this argument is that many tribes across the North American continent made hundreds of treaties with European settlers. Some historians have reasonably argued that its unfair to use the "they did it too argument" because, for the most part, they were trying to reclaim lost land. My issue with "they did it too" argument, is that no matter which way you position the argument, all of North America belonged to the Native Americans, and practically all of North America was conquered by force. While historians disagree on the exact number of people who likely were alive during this period, there was absolutely a large number of people there and North America was fully-populated with a diverse number of people with their own languages, customs and societal order.
![american conquest sioux american conquest sioux](https://i.pinimg.com/originals/0f/6a/bc/0f6abc8476e0a45944fe19483c21aaf6.jpg)
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First, we need to recognize that contrary to popular belief, there were millions of people living in North America when Columbus arrived in the Caribbean in 1492 (I actually answered a question about Native American populations right here that you can read for more info on that). There's a few ways to address this question.