Ummmm....what's this for???
One important advantage that primary soruces have over secondary sources is that primary sources offer a firsthand account of an event - b, which isn't the case with secondary sources. Although this leaves primary sources prone to being biased compared to secondary sources.
Spices allowed many Europeans to have more time on doing other things then shopping in the market. Spices allowed food to be kept longer, and so Europeans didn't have to shop as much. They also gave flavor to food that were usually bland
hope this helps
They allowed for travel against a rivers current Hope this helps! ;D
The third and the first statements, I believe. I could be wrong.
