By "long history" I meant decades not centuries. Still long enough to be multigenerational.

Also there are more ideologies than just religion and economics, and conflict can be over a combination of them. Just because one party is colonial, doesn't mean that all conflicts are necessarily going to be primarily over capital. That will of course be a part, but it's also not like one day all the Jews in Europe were like "let's go kick out all the people from this area because lolz".

I'm trying to avoid talking about my personal beliefs here, but I'm definitely not of the opinion that both sides are equally bad.

I absolutely agree that colonialism is a huge (biggest?) factor though, and that goes all the way back to when European powers chose the land and kicked out the native people.