What agricultural advancement following the end of the american civil war changed the american farm forever?

the use of a plow
the use of steel tools
the use of horsepower
the use of a combustion engine

Which of the following statements was true about lincoln's popularity at the time of the gettysburg address? a) he was just as popular as when he was elected. b) he was more popular with southerners than he had been at the beginning of the war. c) his popularity was very high. d) his popularity was very low.

An educatethe yuan dynasty was responsible for which of the following: i. improving the road system ii. increasing sea trade with india and south east asia. iii. extending the canal system iv. brutal warfare and ruthless killing of people in order to take over china. a. i & iii c. iv only b. ii only d. all of the above member of the government

Which feature of government does montesquieu argue for in his book de l’esprit des lois (spirit of laws)?