Question

text #1: the writing prompt
the erie canal was a unique body of water that was difficult to build. how was it unique and what did engineers do to make it function? use evidence (details, key terms, and ideas) from the text to support your answer.
the erie canal was a unique body of water that was difficult to build because..... (locks, barges,) answering and citing textual evidence and explain the relevance

Explanation:

The Erie Canal was unique as it connected the Great Lakes to the Atlantic Ocean, spanning a significant distance. It was difficult to build due to the varied terrain. Engineers used locks to manage the water level changes (as the canal traversed different elevations). Barges were used for transportation on the canal. Locks are a key engineering feature - they are chambers that fill or empty to raise or lower boats between different water levels. Barges were the main vessels for transporting goods, which was crucial for the canal's economic function.

Answer:

The Erie Canal was unique as it connected the Great Lakes to the Atlantic Ocean over a long distance. It was hard to build due to terrain. Engineers used locks (to handle elevation changes) and barges (for transport). Locks are chambers for water - level adjustment; barges enabled goods movement.