Answer:
Permanent houses, hospitals, schools and cultivation of crops.
Explanation:
Settling and staying in one area or location allowed humans to make permanent houses where they lived forever because that area has all the facilities available which is necessary for living. Humans also started to cultivate food crops instead of hunting in order to fulfill their food needs. Humans also make hospitals and educational institution for themselves in order to educate their children and maintain their health status.
Answer:
Their system of mathematics.
Explanation:
The Maya discovered zero. Most of the world's civilizations had no concept of zero at the time of the Mayans. Without zero there would be: No algebra, no arithmetic, no decimal, no accounts, no physical quantity to measure, no boundary between negative and positive numbers, and no computers. The Mayan’s discovery of zero was one of the most significant steps to get to where we are today.
The counting system was so simple. The Mayans figured out a genius system of counting which only required three symbols, a dot, a line, and a shell. These three symbols could be used in various combinations to keep track of the calendar and do arithmetic. Even the most uneducated people could use it to do basic trade.
Answer:
a. gold coins
Explanation:
Marco Polo was impressed by the paper money, coal burning and gunpowder in China. But, gold coins are not new to him.
Joseph Stalin was ( c ) a cruel leader of the Soviet Union. After Lenin´s death Stalin took over as leader of the Soviet Union. He believed that he should change the country from agricultural to industrialized, building factories all over the Soviet Union. He is known for his cruelty. He order several "purges" in which people he thought were against him would be killed or sent to slave labour camps.
It spurred the growth of suburban by making it easy for people to travel in and out of cities from their suburban homes. 3>