Complex sentence: During this period of time, place names with British connotations were out of favor, and various changes were made (for example, the Kentucky River had been called the Louisa River (or Levisa), after the wife of the Duke of Cumberland).
Split into simpler sentences: During this period of time, place names with British connotations were out of favor. Various other changes were made (for example, the Kentucky River had been called the Louisa River (or Levisa), after the wife of the Duke of Cumberland).