Can someone me with #29-32 i always get stuck on matching terms

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

Awriter agreement is what ? a. contact b. investment c. solvency d. tariff

Explain when conformity is beneficial and when it is harmful. give examples of both?