A challenge that Italy faced after unification was too much control by the church.
ongoing wars with other nations.
political unrest and instability.
demand for new nation-states.

answer; /// i believe that the correct answer is (divison of labor);

c, they united with once

the dominoes began to fall. the surrender at appomattox took place a week later on april 9. while it was the most significant surrender to take place during the civil war, gen. robert e. lee, the confederacy's most respected commander, surrendered only his army of northern virginia to union gen. ulysses s. grant

explanation:

b is correct

have a cool day