Complex sentence: The Incas sent members of parliament in order that they recognize Túpac Inca Yupanqui as sovereign, but the purumaucas decided to face them in the so-called Battle of the Maule.
Split into simpler sentences: The Incas sent members of parliament in order that they recognize Túpac Inca Yupanqui as sovereign. The Purumaucas decided to face them in the so-called Battle of the Maule.