The correct is answer is B
Answer: B
Explanation:
The water was provided, and carefully controlled, by a combination of natural springs and artificial constructions such as aqueducts, dams, canals, reservoirs, and gates. One of the most impressive of these was the 16 km d built by Nezahualcoyotl on the edge of Tenochtitlan to block the salty water of Lake Texcoco and create a lagoon supplied by a fresh water spring.
The correct answer is option d) It gave land to the states to build colleges.
Officially kown as Land-Grant College Act of 1862 or the Morrill Act was a Congress Act passed in 1862 which gave public land grants to States in order to build new colleges and Universities.
At the time, the United States had a handful of schools of higher education and this was seen as a way to simultaneously build universites all over the country and improve the overall skill level in the country.
How is this a history question-