Answer:
The correct answer is A,B and D.
A.They share common ancestors.
B. They speak a common language.
D. They have a shared culture.
In this argument Italian statesman Giuseppe Mazzini states that because of Lombardy's unique historical culture it forms part of the Italian state and not Austria.
While language is also at many times used as a means of national identity,
Giuseppe Mazzini only uses culture as an example and justification to describe Lombardy as an Italian town.