Answer: Italian unification was the process of territorial union that resulted in the emergence of the nation state of Italy in the second half of the nineteenth century. This process was led by the Kingdom of Piedmont-Sardinia, which at that time was governed by King Victor Emanuel II of the House of Savoy.
Italian unification, or Risorgimento as the Italians prefer, was led by the Kingdom of Piedmont-Sardinia. First, the prime minister undertook a brief process of modernization in the kingdom. Regarding unification, Count de Cavour knew that there must be a confrontation against Austria.
The idea that the U.S. was meant to expand into new territories was known as Manifest Destiny.
This was very important during Westward Expansion and at the end of the 1800s, many Americans thought the U.S. should continue to expand, even overseas.