It was an attempt to try to end slavery!!
Answer:
The Great Leap Forward began in 1958.
During this time,grain production lost from 200 million tons to 210 million tons.
This resulted in tens of millions of deaths, with a hold extend between 18 million and 45 million deaths.
Explanation:
According to the context the term that adequately completes the fragment is Herd immunity.
<h3>What is herd immunity?</h3>
Herd immunity is a term to refer to a biostatistical phenomenon that originates in a population when most of it has become immune to a disease (due to previous infection or because it has been vaccinated) and the epidemiological chain is interrupted, causing an indirect form of protection against a disease by preventing unimmunized individuals from becoming infected.
According to the above, the appropriate term to complete the fragment would be herd immunity.
Learn more about herd immunity in: brainly.com/question/13755964