Complex sentence: Recent usage favors the term "isolated" rather than "uncontacted" as few peoples have remained totally uncontacted by modern civilization, but a number have chosen to make contact either exceedingly difficult or dangerous.
Split into simpler sentences: Recent usage favors the term "isolated" rather than "uncontacted", as few peoples have remained totally uncontacted by modern civilization. A number have chosen to make contact either exceedingly difficult or dangerous.