Complex sentence: James' son King Charles came into the greatest possible conflict with the Parliament, and viewed them as a threat to his authority, temporarily dissolving parliament in 1626, and again the next year, and finally dissolving parliament permanently in March 1629.
Split into simpler sentences: James' son King Charles came into the greatest possible conflict with the Parliament, and viewed them as a threat to his authority. He temporarily dissolved parliament in 1626, and again the next year, before dissolving parliament permanently in March 1629.