The year between the end of the american revolution and the ratification of the constitution are sometimes called the “critical period” because

It was called "critical period" because the government at the center failed in his capacity to bring about solutions to many problems relating to the economy.

Explanation:

John Fiske in 1888 describe the critical period of American history as the period where colonies that were independent are bedeviled with lots of assemblage of domestics and array of foreign issues during the end of the revolutionary war in America in 1783.

It must be noted that it was during the period that George Washington was also to be inaugurated as the  new American president

b

explanation:

i beleive that d is the right answer