Which describes an achievement of emperor yangdi that unite china? a. he made marco polo an honored guest at the imperial court in beijing. b. he introduced terraced farming to produce more food. c. he designed a plan for a series of interconnecting canals. d. he built the great wall of china to keep out invading mongol hordes.

the u.s. department of labor is a cabinet-level federal agency that supports the american labor force. it has three overall functions. first, it protects the rights of workers and retirees. second, it provides job training. third, it provides statistics related to working, prices, and income.

i'd assume india mainly because of how isolated japan was.   plus it is a whole china away.