The answer is C.... Hope this helps!
Success in trade always deals with advertisement. In this case, the spread of Islam help distribute it's teachings and beliefs making more people contribute to trade.
The US warned that it would break off diplomatic relations unless Germany changed its tactics.
I also struggled with this question and I'm not 100% sure about my answer, but it's better than no answer. I used the little scale thing on the bottom right corner of the map. And I found out that by sea it was around 700 miles. And by land, I got around 350, but I rounded up to 400. Hopefully I was able to help... this stuff can be hard. I hate DBQ packets, but you gotta do your best.
Have a wonderful day and good luck in history :-)
San Lorenzo because it’s in Mesoamerican civilization