Marriage That Links Two Separate Groups or Tribes
This page is the CodyCross answer for the clue below from Making a Documentary, Group 1515, Puzzle 2 (Extreme Sports).
Question is: Marriage That Links Two Separate Groups or Tribes
and the answer is: EXOGAMY
Word Meaning:
EXOGAMY — marriage to a person belonging to a tribe or group other than one's own as required by custom or law
Definitions from Wiktionary.