What modern day political borders would Xuan Zang had to have crossed to make his journey? Why is this significant? (Think about cultural barriers that might have been present before modern day borders)

Why was control of the atlantic ocean essential to great britain’s success in world war 2

How does the balance of trade look different in the us today vs hot it looked in the 70's

Using only this chart, which step would you take first to compare the standard of living in these countries? add the gdp numbers for the countries to get a total. divide each gdp number by its country's population. subtract each population number from its country's gdp. multiply the population number by the gdp for each country.