Why was nationalism particularly significant to italian unification?
a. italy was controlled by several foreign nations
b. catholicism was losing power among the poor
c. italians had two main conflicting ethnic groups
d. realpolitik depended on nationalism to succeed.

answer: this is because archeologists keep finding artefacts and ancient ruins dated more than 10000 to 15000 years, date around scientists said humans discovered language; which is at least mysterious as scientists always have said that is necessary to have a language to have architecture and some basic maths.

explanation: brainlest