Final answer:
Option (4) The Spanish government founded the colonies of Florida and New Mexico in North America to protect their silver mines in central Mexico from other European powers.
Step-by-step explanation:
To protect the great silver mines of central Mexico from the French, English, and Dutch, the Spanish government pushed colonization farther into North America founding the two colonies of Florida and New Mexico. These colonies, now states in the USA, were part of Spain's efforts to expand their territory and safeguard their precious resources.
The region of Florida was desired for its strategic location, and the colony of New Mexico was founded as an outpost to solidify Spanish claims over the vast mineral wealth of the area.