Cultural Marriages in America how does it work here?

I know many of you may wonder, What do you mean by Cultural marriages in America how does it work here? Ok let's take a moment to think about. Not all marriages are the same. Many of us tend to not repeat our parents marriages, or in some cases use our parents marriage as a model we'd like to follow, but in many cultures what's the marriage norm. How do they function? I've heard many African, Asian, and LAtin American women say they are the subordinate in their marriages, and must consede to their spouse's demands. I've also heard them claim there is no equity in their relationships. They have seen their parents function this way, and have been trained to repeat the cycle. But how does that work here in the US? How do traditional marriages work in a country that encourages freedoms and equity for women? I know it may be a generalization I make, and there may be many many cultural marriages that function like any other marriage, but are they healthy marriages? Do husband and wife communicate freely? Do husband and wife feel safe to share their desires with their mate? And I am not speaking of interracial marriages where one spouse is caucasian, or African American , or whatever, the combination may be. I'd really like to know because I just have very many tips for this question.