They were free to do so after capturing Granada, is the correct answer.
Explanation:
The Spanish kingdoms of Castille and Aragon were united when King <em>Ferdinand and Queen Isabella</em> got married. After the unification, they were searching for national heritage. They wanted to have a fast route for trading in Asian spices which could make Spain rich and powerful and if any other materials were obtained from the voyage it would have been an added benefit.
As compared to other European nations Spain was poor and didn't have many natural resources, colonization was a way in which they could build wealth. Earlier the King and Queen were occupied in fights against the Moors in southern Spain and after the defeat of the moors, they were able to pay attention to other issues.
<em>So when Columbus approached the Spanish king and queen they agreed to finance his voyage and provided him with money and ships. </em>
It would be the "Orinoco" River that is the center of the largest river system in the Tropical North, since its drainage basin covers roughly <span>880,000 square kilometres.</span>
The main reason the United States government intervened in the Great Railroad Strike of 1877 was because it was leaving thousands of people without transportation, which meant that the US GDP was decreasing in hurting business of all kinds.