Are there countries that have survived very different goals by their founders?

As I understand it, when the US was founded, one group of founders wanted slavery and the other group did not. They came up with a number of compromises to build a country together despite their differences. This came back and bit us a hundred years later in the US Civil War. I don't think we can talk about present politics in this group, but I think it's an ongoing issue.

My question is: are there countries that were founded by people with values and goals for the country that conflicted and that have not had ongoing conflict as a result? Or should it simply be the advice, if you are founding a new country or a new government, do not do so with people that you do not have common cause with even if that means building a country with less territory and population?

Thank you.