At some point in their recent history, all of the following countries became divided into two political entities as a result of cultural or ideological conflict EXCEPT:. a) Korea
b) Vietnam
c) Germany
d) Ireland
e) Japan

D Ireland Ireland became an independent country and cut off all trades from those other country’s

Why you put last one a? i think is b.

The us is first  the  u.s. economy  remains the  largest in the world  in terms of nominal  gdp. however, the  u.s. economy  loses its spot as the number one  economy  to china when  measured  in terms of  gdp  based on ppp. in these terms, china's  gdp  is $23.19 trillion exceeds the  u.s. gdp  of $19.42 trillion