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: Calvinism gained some popularity in Scandinavia, especially Sweden, but was rejected in favor of Lutheranism after the synod of Uppsala in 1593.

Calvinism gained some popularity in Scandinavia especially in Sweden. It was later rejected in favor of Lutheranism after the Uppsala Synod in 1593.