Answer:
B. Physical geography and fear of the unknown
Explanation:
When it came to trading goods in this time period many were scared to travel in the fear of not being able to get back due to the lack of navigation as well as such weird geography really hope this helped. :)
The Louisiana purchase was the first land added
Answer: Different culture, different living standards, to start anew and create opportunities for themselves
What time period we talking about? Constantinople has been through time for more then 2,000 years, Byzantium, Constantinople, Istanbul.
Throughout the roman era it was the biggest trade hub of the east, and was hence forth the capital of the Eastern Roman empire. Which survived for 1,000 years, when Byzantium fell in the 1400's to the ottomans, the ottomans declared Constantinople their capital, and renamed it Istanbul.