The Pre-Columbian civilizations of the Maya, Aztec, and Inca were similar in that they: (no links no viruses) if you do links I will report you! if you get it right I will mark as brainlist! please help this was due at 3:30 pm for a quiz have asked but no one helps! already late on it Turing in so please! A:lacked a strong central government.
B:showed little evidence of urbanization.
C:developed complex mathematical and calendar systems.
D:used more deadly and effective military technology than the Europeans.

developed complex mathematical and calendar systems.

Explanation:

Proven answer from test answer book :D

hutus would be your answer.

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the underground railroad (apocope of the metropolitan railroad) is a system of urban trains located within a city and its metropolitan area. it is characterized for being a massive transport of passengers in the big cities, uniting diverse zones and their environs, with high capacity and frequency and in segregated form to other systems of transport. metropolitan railroads are built underground or on the surface, although most systems use mixed models where sections are combined in both modalities.

1 - as a result, the metro tends to reduce car travel for two reasons: first, due to the greater transfer of users from the car and, second, due to the reduction in the acquisition of cars in homes located in sectors near the stations of the metro.

2 -the metro allows to contribute effectively to the achievement of all the objectives of an urban development policy: it improves the efficiency of the city's economy by reducing travel costs and also generates a higher level of activities in the city center, taking advantage of of the agglomeration economies.

3 -it is a clean means of transport, since it uses renewable energy (usually electricity), taking care of the environment and avoiding excessive pollution.