The pueblo indians encountered by the spanish in the 16th century
a. had engaged in settled village life only briefly before the spanish arrived. b. had been almost completely isolated from any other people before the spanish arrived. c. used irrigation systems to aid their agricultural production. d. were called mound builders for the burial mounds they created. e. created a vast empire that included control of the incas.

Option: c. used irrigation systems to aid their agricultural production.

Explanation:

Pueblo Indians are the Native Americans known as Puebloans, who were engaged in agriculture before the arrival of the Spanish in the new world. Pueblo Indians located in the Southwestern parts of the United States. They follow their old traditional religious practices. Pueblo peoples were farmers, used an irrigation system to cultivate corn, beans, squash and other crops as they were excellent farmers.

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