Complex sentence: Twelve other jurisdictions with approximately 100,000 members formed the Anglican Church in North America (ACNA) on December 3-4,2008, which is seeking official recognition as a province within the Anglican Communion.
Split into simpler sentences: Twelve other jurisdictions, with a combined membership of approximately 100,000, formed the Anglican Church in North America (ACNA) on December 3-4,2008. ACNA is seeking official recognition as a province within the Anglican Communion.