In what ways could Nationalism create problems between countries?

   A nationalist government may invoke such feelings of division in order to appeal to popular opinion; hence the less legitimate a government, the more likely such nationalist divisions can lead to war.

i can't beat you to a pulp if i'm not close enough.

states

explanation:

as the old saying goes, all politics are local. state and federal governments affect our daily lives in numerous ways. yet, in our federal system, there is supposed to be a balance between federal and state power. as james madison envisioned it in federalist no. 51, “the power surrendered by the people” would be “divided between two distinct governments,” creating a balance of power that would enable the “different governments [to] control each other.”