Which statement best completes the diagram? Effects of Mongol Empire on China
Trade with Europe expands.
New technology develops.
?
A. All citizens are given equal rights.
B. Travel is easier and safer.
C. Laws are no longer strictly enforced.
D. Wars break out more frequently.

What do most climatologists see as a major cause of rising global temperatures? a. earth's closer proximity to the sun due to its gravitational pull b. greenhouse gases produced by burning fossil fuels c. rising ocean levels caused by melting polar ice sheets d. water pollution cause by industrial waste