The year stated in this question should be checked again and rectified.
Answer:
Company rule came to an end in 1923 in Southern Rhodesia and settlers demanded for the end of company rule because they wanted effective self-government.
Step-by-step explanation:
The settlers in Southern Rhodesia wanted self-government . This was because as the number of white settlers and elected members in the Legislative Council increased, there was a demand for self-government; a gradual transfer from Company rule to self-government took place.
In 1923 when the Company's charter was revoked by Whitehall, the Southern Rhodesia became a self-governing colony of Britain in that same year.
In 1924, the Northern Rhodesia experienced an end to British South Africa Company rule.