Why do you think that north korea has a closer relationship with china than it does with the united states

I think that north Korea have a stronger relationship with china than the us because the U.S try to send a misle out on them. 

I think it’s because North Korea borders China and during the Korean War the Chinese communist leader Mao-Tse-Tung joined the war backing North Korea. Whilst The USA were aiding the South by sending UN troops to help defend the country against communism .