SANDRINGHAM, England — Queen Elizabeth II used her traditional Christmas broadcast Thursday to call for reconciliation throughout the United Kingdom.

She said it will take time to heal divisions in Scotland, where a referendum was held this year on whether to remain part of Britain, and praised progress resolving the conflict in Northern Ireland. Elizabeth cited the “Christmas truce” in 1914 as an example to be remembered.

“Something remarkable did happen that Christmas, exactly 100 years ago today,” she said.