I went to www.google.com and entered your words -- zheng he's voyage -- and here are the results:
You can do the same if you enter key search words in Google also.
i want to learn about what kind of clothing in the 1600 and 1776 in the colonnial times?
as a result for the northwest passage,what two colonies did the french find
How Hudson could have negotiated to improve his circumstances with his crew and the natives?
a violent upspring against a ruler