Mfecane: The Mfecane was a period of widespread warfare and migration in Southern Africa during the 19th century, which was partly influenced by Chief Shaka's military campaigns.
Zulu Kingdom: The Zulu Kingdom was established by Chief Shaka and became one of the most powerful states in Southern Africa during its time.
Tribal Confederation: A tribal confederation is an alliance formed between multiple tribes for political or military purposes. In this context, it could refer to a potential confederation led by Chief Shaka had he successfully unified all Southern African tribes.