Kansas and Missouri are two bordering U.S. states with a long and tumultuous history. The relationship between these two states has its roots in Bleeding Kansas, but mutual distrust has continued off and on since then, even in sporting contexts. The two states, being neighbors, have to deal with each other regularly, but the bitterness sown during Bleeding Kansas lingers. To some extent, this is reflected in university athletics, as the Border War rivalry between the two states' main universities shows. The two states also compete economically.