Complex sentence: It is the tallest flagpole in the world since its inauguration in 2014, the flag was furled on the flagpole and was inaugurated on National Day of Saudi Arabia 23rd September, 2014.
Split into simpler sentences: It is the tallest flagpole in the world since its inauguration in 2014. The flag was furled on the flagpole and was inaugurated on National Day of Saudi Arabia 23rd September, 2014.