Complex sentence: King George VI of the United Kingdom dispatched a message of congratulation to Hitler; due to the strained relations between the two countries at the time, the advisors of the British monarch had considered whether the King should ignore the birthday or not.
Split into simpler sentences: King George VI of the United Kingdom dispatched a message of congratulation to Hitler. Due to the strained relations between the two countries at the time, the advisors of the British monarch had considered whether the King should ignore the birthday or not.