Answer:
Trade spreads ideas and culture because it involves people moving from place to place around the world as they trade. As they move, they come into contact with new ideas and cultural practices. Trade routes influenced the spread of religion, which is, in essence a part of culture. The spread of religion often lead to war, for instance, the crusades, which then lead to soldiers spreading a great deal of time in a new area and trading with the locals.
You should use since it's not the sample answer