Definition: Rewrite each original sentence in order to make it easier to understand by non-native speakers of English. You can do so by replacing complex words with simpler synonyms (i.e. paraphrasing), deleting unimportant information (i.e. compression), and/or splitting a long complex sentence into several simpler ones. The final simplified sentences need to be grammatical, fluent, and retain the main ideas of their original counterparts without altering their meanings.
Input: He was an exceptionally active campaigner and critic in the crisis years in Italy after the First World War and into the early years of Fascist rule.

He was an active campaigner and critic during the crisis era in Italy, after the First World War and into the early years of Fascist rule.