What role did Marco Polo serve in the Mongol Empire? Marco Polo provided military tactics to Genghis Khan,
Marco Polo worked as an administrator for 17 years,
Marco Polo ran one of the khanates in the region,
Marco Polo wrote a book about Kublai Khan,

answer: the ocean

explanation: if you map out 30 n and 40 n latitude, you will get the ocean

number 4. should be the correct answer

both the national government and state governments share the power of being able to: collect taxes, build roads, borrow money, establish courts, make and enforce laws, charter banks and corporations, spend money for the general welfare,