Which statements about characteristics of the Maya's civilization are correct? Choose all answers that are correct.

built irrigation canals to water crops in arid land

understood the idea of zero as a number

built a major city with stone pyramids at Tikal on the Yucatan Peninsula

wrote epic poems and drama

understood the idea of zero as a number

Explanation:

the Mayans developed zero as a placeholder around A.D. 350 and used it to denote a placeholder in their elaborate calendar systems. Despite being highly skilled mathematicians, the Mayans never used zero in equations

when a country suffers, for example, a drought period, the market product is affected for a low offer, in this case, potatoes; the government has to tax to the households, which have to give more money for the potatoes which they consume, that situation make them consume substitute goods even through loans, it could increase the financial market movement and the inflationary phenomena, the business has to increase salaries in order to the employees could buy a more expensive food (potatoes) and in order to inflation tha business had to buy expensive supplies in the factor market, while the rest of the world have to gain more money to consume the same amount of potatoes.