Which statement about the korean war is true? a. south korea surrendered after communist china's army joined the conflict. b. the soviet union sent troops to fight alongside north korea's army. c. president truman never asked congress for a formal declaration of war. d. the united nations refused to authorize the use of force to stop north korea.

its 10000000000000% not B the correct answer is A i did a lot of research to get the answer hope you get an A with the answer A  

i believe that the answer to the question provided above is that  establishing smaller ethnic communities within larger communities  gives more chance for people to know each other more but this might lead to the  conflict between groups.

d will be ur answer

to mark sum 1 brainliest there has to be 2 answer at least