Aztecs were dominant in Central Mexico in the 1300s through the early 1500s.
Their major mathematical ideas:
- They had vigesimal number system ( using 20 as its base ). For example: 23 = 1 dot + 3 lines
- They had knowledge about multiplication and division and also about certain principles in geometry.
- They estimated land area in parcels that were often irregularly shaped.
- They had standard unit of linear measurement ( about 2.5 meters ).
Answer:
i personally think it is part 2
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Answer:
The elevator revolutionised the Vertical transportation and logistics. Prior to that, even though the usual transportation between places was developed mainly because of the advancements in the vehicle and naval transportation, moving things "up" and vertically was supper difficult. Mainly moving people.
The elevator allowed the development of the Skyscraper. Tall buildings that could house thousands of people and eventually that would become the symbol of America.
Explanation:
