Final answer:
Spain colonized most lands in South America.
Step-by-step explanation:
The country that colonized most lands in South America is Spain. During the Age of Exploration in the 15th and 16th centuries, Spain established colonies in various parts of South America, including present-day countries such as Peru, Bolivia, Colombia, Argentina, and Chile. These colonies were part of the Spanish Empire and played a significant role in the economic and political development of South America.
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