The Kingdom of Saudi Arabia celebrates on September 23 the National Day. On this great day in the year 1932, the historic announcement was made by King Abdulaziz bin Abdul Rahman Al Saud, may God have mercy on him, to unify this land. The name "Kingdom of Saudi Arabia" was given to it after a struggle and perseverance that lasted for thirty-two years, during which solid foundations were laid for this great structure, guided by the teachings of the Holy Quran and the Sunnah.