The reason the Spanish established missions were to spread region into a new region. Hope this helps, good luck.
The Golden Age. Generally speaking, historians and technicians refer to the time between post WWI and the Great Depression as the "Golden Age" of piano building, because by and large, many people had come to the conclusion that the design and general conception of the instrument was 'complete', and that there was very little room for further improvements.
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Answer:
Chinampa*floating islands* allowed the Aztecs to grow food and build structures
Pyramids
It was advantageously located near the coast and other settlements.