How was the economic system used by the aztecs similar to the economic
system used by the inca?

a. the aztecs had a vertical economy, whereas the inca used a coin-
based system.

b. the aztecs used a paper money system, whereas the inca used a
barter system.

c. the aztecs used a barter system, whereas the inca had a vertical
economy

d. the aztecs had a coin-based system, whereas the inca used a
barter system.

Pretty sure its C

Explanation:

The Aztec economy was based on three things: agricultural goods, tribute, and trade.

Incan males were required to provide physical labor to the state for a set number of days, sometimes as much as two-thirds of the year. They built public buildings and palaces, as well as an extensive system of roads (14,000 miles in all), which linked the empire together and allowed for its ongoing expansion. In return, the government provided all the basic necessities of life; food, clothing, tools, housing, etc. No money changed hands.

the captain of a steam ship naturally chooses the shortest route to his destination. since a sailing ship is usually pushed by winds and currents, its captain must find a route where the wind will probably blow in the right direction. tacking, i.e. using contrary wind to pull (sic) the sails, was always possible but wasted time because of the zigzagging required, and this would significantly delay long voyages. the early european explorers were not only looking for new lands. they also had to discover the pattern of winds and currents that would carry them where they wanted to go. during the age of sail winds and currents determined trade routes and therefore influenced european imperialism and modern political geography. for an outline to the main wind systems see global wind patterns.

pilotage or cabotage, in one sense, is the art of sailing along the coast using known landmarks. navigation, in one sense, is the art of sailing long distances out of sight of land.[1] although the polynesians were able to sail the pacific (with great difficulty) and people regularly sailed north and south across the mediterranean, before the time of columbus nearly all sailing was coastal pilotage

        it is some were in here? ///

d. dr. francis collins