I would have to say that the answer would be religious freedom. In the DOI (Declaration of Independence), it mentions life, liberty, and the pursuit of happiness. In the BOI (Bill of Rights), religious freedoms are mentioned. Hopefully this helps.
The answer is, European settlement had overwhelmingly negative consequences for Native Americans. Though Native American tribes did occasionally form positive relationships with European settlers, permanent European settlement in America eventually led to disease and displacement. Native Americans had no immunity to European illnesses and their population was devastated by this disease called smallpox.
Legislators by threatening of a veto <span />
It was a physical barrier. Literally a concrete wall.
These countries started off with disagreements and bad things happened, but the reason why they do Cooperate now is because the have a shared interest. For example when the United States and Russia had to join together despite the US not wanting to get involved because of Hitler. They all had to do the same thing which is set aside their differences and focus on what was going to help them both in the long run. Lastly, resources are also a huge component as to why they are buddies now. Every country relies on another country for a specific resource and once that resource is taken away they’ll have no where else to go, so they have to go back and forget their differences. Ie. the United States and Japan.