Chapter 8 empirically evaluates the hypotheses proposed in Chapter 7. The first set of hypotheses examines the effectiveness of conflict management efforts to settle the border within the context of rivalry. The empirical patterns are consistent with our expectations. Negotiation and mediation generally increase the likelihood of border settlement but this relationship does not hold when power endowments are present. Legal approaches generally help neighbors settle borders with and without power endowments, but are generally more effective in the absence of power endowments. We then examine the relationship between border settlement, power endowments, and rivalry termination. The probability of rivalry termination increases with border settlement but termination is less likely when power endowments are present. Rivalry relationship transforms once border settlement occurs but the rivalry does not immediately terminate. Crises and disputes are less severe and of shorter durations.We find little evidence that democratic neighbors, allied, closer in parity, or the presence of ethnic kin in the border region affect the odds of rivalry termination.