what caused a stalemate in korea

Question 1

what caused a stalemate in Korea

Answer 1

weaponry- napalm. Explosives difficult to cross the 38th parallel

international involvement- US +UN  helped force the North Korean forces back
The us provided:
5o% of armed forces
86% naval forces
93% air forces 

tactics- Korean’s people army (north) and the people’s volunteer army (china) used the environment to their advantage

north and south korean attitudes- both were nationalists and wanted unification under their governments rule