Complex sentence: In the years following his death his ideas became taboo in the Spanish realm, and he was seen as a nearly heretical extremist; the accounts written by his enemies Lopez de Gómara and Oviedo were widely read and published.
Split into simpler sentences: In the years following his death, his ideas became taboo in the Spanish realm, and he was seen as a nearly heretical extremist. The accounts written by his enemies Lopez de Gómara and Oviedo were widely read and published.