Answer:
Because they were very powerful and had a lot of money to fund such exploration.
Explanation:
so pretty much the same as the other answer
The reason why it was common for explorers to work for kings and queens of different countries was that they had the money to fund their exploration.
This is a supreme leader of a country or a province that is in charge of governing and protecting them.
Hence, we can note that exploration of new lands has always been expensive and needs a powerful and rich sponsor and hence this was the reason why explorers worked with kings and queens of different countries.
Read more about exploration here:
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