6. Which of the following was a shared characteristic of Mesoamerican
cultures by 800 A. D.?

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.

answer: born in saint-dié, in the vosges department, france, he studied law, and was called to the bar at paris in 1854,[2] but soon went into politics, contributing to various newspapers, particularly to le temps. he attacked the second french empire with great violence, directing his opposition especially against baron haussmann, prefect of the seine department. a series of his articles in le temps was later republished as the fantastic tales of haussmannlaxupa (1868).[2]

explanation:

(1) university of virginia: its a colonial heritage was founded in 1819 by declaration of independence author and former president thomas -charlottesville, virginia, united

(2) yellowstone national park is an american national park located in wyoming,montana and idaho and is a colonial heritage site.it was established by us congress and signed into law by president ulysses g grant on march 1,1872.yellowstone is usa's and world's first national park and a heritage site.the park is also known for its wildlife and its geothermal geysers.

(3) yosemite national park: : : colonial heritage site in north in western sierra nevada of central was designated a world heritage site in 1984..it is famous for its granite cliffs,waterfalls,clear streams,giant sequoia groves,lakes,mountains,glaciers and biological

(4) grand canyon national park: : colonial heritage site in north in north western arizona and is 15th site declared as national park..the park's central feature is the grand canyon, a gorge of the colorado river,which is also considered one of the wonders of the world.the park covers 1217262 acres.the grand canyon was designated a world heritage site in by unesco in 1979.

(5) taos pueblo

(6) redwood national park

(7) cahokia mounds

(8) wrangell-st. elias national park

(9) glacier bay national park

(10) kluane national park

(11) tatshenshini-alsek provincial park

(12) mammoth cave national park

(13) olympic national park

(14) great smoky mountains national park

(15) quebec city

(16) everglades national park

(17) lunenburg, nova scotia

(18) glacier national park

(19)chichen itza

the quote by walter cronkite contributes to the central idea of the text by supporting the central idea. cronkite argues that what is deemed “right” for and in america may not be good for other countries. this supports the central idea of the text, that the vietnam war was unpopular in america for multiple reasons- including cronkite’s.