Complex sentence: In spite of the challenges brought about by sanctions and the deteriorating political environment within Rhodesia, Air Rhodesia continued to perform well, it increased its profits between 1969--1970, introduced services to Kariba, and upgraded the Dakota services to Wankie to the Viscount.
Split into simpler sentences: In spite of the challenges brought about by sanctions and the deteriorating political environment within Rhodesia, Air Rhodesia continued to perform well. It increased its profits between 1969--1970, introduced services to Kariba, and upgraded the Dakota services to Wankie to the Viscount.