Complex sentence: The Royal Trust was proposed in a letter by king Leopold II of Belgium on 9 April 1900, in addition some properties were added to the donation in a letter of 15 November 1900.
Split into simpler sentences: The Royal Trust was proposed in a letter by King Leopold II of the Belgians on 9 April 1900. In addition some properties were added to the donation in a letter of 15 November 1900.