My supposedly unanswered questions.
Do you actually think there were inhabitated places that were out of the reach of the Roman empire? Yes. Answered.
Do you really think that Rome itself wasn't able to also go where any such peoples might have ventured out to? Yes. Answered.
Can you prove that any such peoples were never subject to Roman rule? Yes. Answered.
So what you'd have me believe is that there were peoples who found their way across oceans in order to take up residence elsewhere in the world ... while Rome's government wasn't paying attention? Yes. Answered.
Rome imposed their own form of order wherever they conquered. Roman roads. Roman language. Roman administration. Not until Marco Polo's return in 1295 CE was there an economic/cultural exchange between China and Rome. The impact was immediate and pronounced. All of a sudden, Italians had pasta.
As Leolaia has painfully explained to you, your outrageous claim carries the burden of proof. All the links I provided are abundant evidence that there were cultures that remained untouched by Roman influence through the entire period under discussion.
Schizm, there's a difference between an agressive and a reasoned response. I prefer the second.