Answer:
B. Italy
Italy was not part of the "great powers" of the Congress of Vienna
The boom of the 1920's rested on a weak foundation since the prosperity was not enjoyed by all economic groups.
<span>Immigration to Europe has a long history, but increased substantially in the later 20th century.Western European countries, especially, saw a high growth in immigration .America to Spain and Portugal; and from Ireland, India, Pakistan, Germany,According to residence permit data for 2011, more than 710,000 were.</span>