Complex sentence: Urdăreanu was not only an influenced adviser of the King, from 1938 till the end of the reign of the King on September 6,1940, as Minister of the Court he also was the representative of the King in the government.
Split into simpler sentences: Urdăreanu was not only an influential adviser to the King, from 1938 till the end of the reign on September 6,1940. As Minister of the Court he also was a representative of the King in the government.