How did the aztecs apply their engineering skills to the challenges of living on an island?
excplain your answer

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Explanation:

First of all, the biggest challenge of all was precisely  living in a marsh which had no solid ground to use as foundation, however,they came up with a clever solution, They embedded thousands of  pillings made of wood into the mud along with obsidians (volcanic rocks) in order to provide strength for the foundations; by doing so, they were able to build Tenochtitlán on top of these bases.

The other engineering challenge for the aztecs was the acueduct which ran nearly 3 miles from the heart of the city to the center of the island.

option d is correct. corroborated sources of historical evidence   is necessary to validate a claim about an event in history.

historians tend to use written sources, but audio and visual materials as well as artifacts are important objects that supply information to modern historians.

historical sources are usually divided into two categories: primary and secondary sources. depending on the historian's intent, some sources shift their designation. determining what type of sources toimplement, and the level of credibility and reliability of those sources, is a significant step in critical thinking for the historian.

explanation: