Complex sentence: Tyndall found a way to eradicate the bacterial spores that came to be known as "Tyndallization" and which historically was the earliest known effective way to destroy bacterial spores.
Split into simpler sentences: Tyndall found a way to eradicate the bacterial spores that came to be known as "Tyndallization". Tyndallization historically was the earliest known effective way to destroy bacterial spores.