Final answer:
The Christian Crusaders indirectly contributed to the discovery of America by bringing back new knowledge and goods from the Middle East, which sparked curiosity and exploration. Christopher Columbus, influenced by the Crusaders' tales, sought support for his voyage to find an oceanic route to India.
Step-by-step explanation:
The Christian crusaders indirectly contributed to the discovery of America because they brought back new knowledge, technologies, and goods from the Middle East. When the Catholic Crusaders returned from the Middle East, they brought back tales of new lands and people, as well as cloth, such as silk, and foods, such as sugar, which they had never encountered before.
This exchange of knowledge and goods sparked curiosity and interest in exploration. One of the explorers who was influenced by the Crusaders' tales was Christopher Columbus, who sought support from Queen Isabella and King Ferdinand of Spain to finance his voyage to find an oceanic route to India. Although Columbus was not the first European to reach the Americas, his expedition opened up new possibilities for further exploration and ultimately led to the discovery and colonization of America by Europeans.