Complex sentence: Buddhist legend holds that during his lifetime the Buddha flew to Sri Lanka and left his footprint on Adam's Peak to indicate the importance of Sri Lanka as the perpetuator of his teachings, and also left footprints in all lands where his teachings would be acknowledged.
Split into simpler sentences: Buddhist legend holds that during his lifetime the Buddha flew to Sri Lanka and left his footprint on Adam's Peak to indicate the importance of Sri Lanka as the perpetuator of his teachings. It was further told that the Buddha also left his footprint in all lands where his teachings would be acknowledged.