According to the text, large slave plantations were efficient than farms without slaves because (among several reasons) . a. more, the intensity per hour with which slaves worked was high b. more, large plantation owners used political power to control the best land c. less, free men worked harder than slaves d. less, slaves frequently sabotaged production

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.

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the earthquake in haiti was a magnitude of 7.0 according to the u.s geological survey yet the smaller earthquake in haiti killed more than 200,000 and left more than 1.2 million people homeless. the chile earthquake was a magnitude of 8.8 and 500 times more stronger but chile's earthquake only injured 712 people.