Complex sentence: Shaka loving Mzilikazi did nothing about it however his generals long disliking Mzilikazi pressed for action and thus a first force was sent to teach Mzilikazi a lesson.
Split into simpler sentences: Shaka loving Mzilikazi did nothing about it. His generals, however, long disliking Mzilikazi pressed for action and thus a first force was sent to teach Mzilikazi a lesson.