Why did the Zulu Kingdom become part of the British Empire?

Sailors went to special school to learn how to use the new technology that would them sail far distences. the school we know about was

Science cannot describe things that a.) are beyond imagination, experience, or human ability b.) cannot be observed, measured, or tested c.) have not been conclusively proven d.) occur without being seen, heard, or felt

Which of the following is a result of the low of food production