Qatar had started to develop into an important settlement in the eighteenth century. 

On 18 December 1878, Sheikh Jassim bin Mohammed Al Thani, succeeded his father, Sheikh Mohammed bin Thani, as ruler of Qatar, becoming its first Emir.

Ruling Qatar until his death in 1913, Sultan Jassim is refered in Qatar as 'The Founder' as under his rule he unified the tribes of the peninsula marking the creation of the modern state of Qatar. 

How is Qatar National Day celebrated?

The holiday was established on 21 June 2007 by decree of the Emir and Heir Apparent Sheikh Tamim bin Hamad al-Thani.

It is a time for Qataris to celebrate their national identity and the holiday is marked by a large parade in Doha, the capital of Qatar. The parade is the most popular event of the holiday and features displays from the Qatari military and culminates by an appearance of members of the ruling family.