Why did Carthage break their treaty with rome

Carthage observed its treaties with Rome, and the conditions whichRome imposed on it after defeating Carthage in the first two wars.Rome was determined to stop Carthage’s retaining economic powerwhich inhibited Rome’s expansion. Rome arranged for its allies toattack Carthage, and when Carthage defended itself, Rome declaredit had broken its treaty, invaded and captured Carthage, destroyingthe city and selling its population into slavery to finally get ridof a resilient rival.