The discovery of America by Christopher Columbus had a surprise element.

Columbus thought he had discovered India.

Explanation:

This was actually a surprising factor because after discovering America, it turned out that Columbus all along thought he had discovered India. That is why the native population was called Indians. After the first expedition, Columbus visited America twice more. The original expedition sailed to the Bahamas, and the next two led by Columbus ended up in Cuba and Haiti.

i believe it was spain

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