Complex sentence: The Rai Emperors fought many wars with the invading Muslims, resisting invasion of the Indo-Persia region for over 110 years, the wars left a drain on the economy and the empire disappeared.
Split into simpler sentences: The Rai Emperors fought many battles with the invading Muslims, resisting invasion of the Indo-Persia region. The numerous wars left a drain on the economy and the empire disappeared.