Answer:
The details of reports such as Cabeza de Vaca's led to the belief that expansion in the Americas would lead to an increase in Spanish wealth and power.
Step-by-step explanation:
Cabeza de Vaca's reports on the abundance of metals in the land were a driving force behind the Spanish Empire's interest in colonizing and exploiting the resources of the Americas. This led to the establishment of colonies throughout the region and the forced labor of Indigenous peoples to extract resources such as gold and silver. The emphasis was on economic gain, rather than the spread of the Catholic faith, which was also a significant motivation for Spanish expansion but was not directly related to the reports of abundant resources.