Complex sentence: When the Ay power diminished, Venad became the southern most principality of the Second Chera Kingdom Invasion of Cholas into Venad caused the destruction of Kollam in 1096.
Split into simpler sentences: When the Ay power diminished, Venad became the southernmost principality of the Second Chera Kingdom. An invasion of the Cholas into Venad caused the destruction of Kollam in 1096.