Can someone tell me if this answer is right because i'm not too sure

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

President reagan believed the spread of communism in latin america was directly due to? a.guerrilla fighters. b.contras. c.terrorists. d.leftists.

In the course of illness senerational campaign against stephen douglas in1858 abraham declared that