Large slave plantations were more efficient than farms without slaves because (among several reasons) the intensity per hour with which slaves worked was high.
Explanation:
A person is said to be slave, if he/she is the legal property of another person and forced to obey them. In olden days slaves were traded for goods and services. By 1825, the United States of America had had the large population of slaves.
America’s slave population reached nearly 4 million before the Civil War. The slaves were forced to work in farms for long hours. The slave market in America increased rapidly and the value of slaves was increased to tenfold in the year of 1810-1860.
