Complex sentence: The chiefs of Akwa Akpa placed themselves under British protection in 1884, and from then until 1906 Old Calabar was the headquarters of the Niger Coast Protectorate, after which Lagos became the main center.
Split into simpler sentences: The chiefs of Akwa Akpa placed themselves under British protection in 1884. From 1884 until 1906 Old Calabar was the headquarters of the Niger Coast Protectorate, after which Lagos became the main center.