1. In the 900s, the Vikings first sailed to Greenland and Iceland. About 1000 AD, Leif Ericson, a Viking leader, led his people from Greenland to the Atlantic coast of North America.
2. Marco Polo described food spices that were not known to Europeans, including many jewelries as well, such as silk, carpets, and other treasures. These made European traders interested in Marco's adventures.
3. I would, because the people back then were so eager to search for new world besides theirs. This hope or wish that there was a new world out there would make me really want to take a look at the new world Marco described.
4. The risks along the sail include tsunami, storms, attack by native people along the coast, and food shortage.
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