What made europeans go out and explore the world at the end of the 15th century?

There were many reasons mainly the fact that they wanted to control the spice trade which was many in China Japan and India (Which at the time were called the Indies) and they needed a faster way (and therefore more profitable way) to get the spices instead of trading with the merchants and traders like they did before which was more expensive. And they decided to find more faster, cheaper routes to Asia.Also many people wanted to spread their religion Christanity to others which caused problems later on. At the time explorers thought that if they could explore they would end up with lots of gold and jewels and they craved fame and glory as well. And at the time, new shipbuilding and mapping technology was created making it easier to travel by ship than it had before. These are just some of the main reasons why.

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