Why didn't the early Spanish explorers wonder about the history of Native Americans?

Christopher Columbus unlocked the modern world; land that had millions of inhabitants. In his thinking, he taught he had the new routes to get to the east. Therefore, by mistake, he referred them as Indians. However, it took over 100 years to settle the Native Americans.

This examination was essential in understanding what had happened to the earlier settlers and other north of European natives. As these people explored, they later got in touch with the natives.

The Spanish only cared about the money (GOLD) and land not about people.