Is truth more universal or relative?

[VulcanRevenge]

-Yes, I'm sure this has been brought up before in several discussions, but I want to isolate it and perhaps shed some new light on it.-

In that question I mean to ask how far can we assume truth, knowledge or principles to be accurate and to provide what they say they will provide? I'm asking because my full opinion is yet to be formed, I'm not trying to persuade anyone one way or the other.

Are Human beings more similar or dissimilar? Can we say something is true for the whole human race? If not, then can we say something is true for a nation? A community? A family? Can we even say a certain fact is consistently true for an individual over time? Is there a point where your beliefs are ineffective or just simply not true?

I think the question I'm trying to ask is do you believe your beliefs are effective and true for the whole world? If not, then what is the distance, amount of people, culture, or anything else, that causes a falsification of your beliefs, or inability to use your beliefs?

Is one person's truth not true for another? Do we each have our own separate truths? Can we believe something to be true and then it becomes so? Can more than one person depend on the same truths?

If you believe truth to be more universal, is there a point where truth becomes more relative? If you believe truth to be more relative, are there situations and evidences to say it is more universal and singular?

These are just a few questions I've considered, answering just a couple or even one in a single post is welcome.