Complex sentence: Technically, "Colony of Kenya" referred to the interior lands, while a ten-mile coastal strip (ostensibly on lease from the Sultan of Zanzibar) was the "Protectorate of Kenya" and was only ceded to the Colony of Kenya in October 1963.
Split into simpler sentences: Technically, "Colony of Kenya" referred to the interior lands. A ten-mile coastal strip, ostensibly on lease from the Sultan of Zanzibar, was the "Protectorate of Kenya" and was only ceded to the Colony of Kenya in October 1963.