Which countries aligned with the united states after ww2

Which of the following flow charts accurately illustrates the history of constitutional amendments in the united states?

Why is it useful for historians to base certain studies on the analysis of historical periods

The crittenden compromise which option explains the role that this legislation played in the buildup to the civil war? it attempted to resolve the complications introduced by the missouri compromise; this to stave off the civil war. it sought to encourage southern diplomats to take their seats in congress so their voices could be heard in government. it proposed six amendments to the constitution aimed at protecting slavery; however, its passage was blocked by congress. it attempted to establish stipulations that made secession from the united states constitutionally legal.