In these regions, a competitive rivalry for dominance created great turmoil which was only resolved towards the end of the seventh century (roughly fifty years after the initial military victories).

Fortunately the nastiness disappeared to be replaced by a competitive rivalry which, for much of the afternoon, looked like producing a happy ending for both sides.

This book stressed the importance of the process of competitive rivalry in markets.

The four teams maintain an often heated and competitive rivalry.

They are pushing each other all the time to find new answers, evolving the sport with their competitive rivalries.