, who wished to avoid disruption to trade and were angry that the Al Khalifas of Bahrain had broken a treaty forbidding maritime warfare in the area, came to Qatar and were met by the headman of Al Bidda, Sheikh Mohammed bin Thani, on behalf of "all the Sheikhs and tribes" in the peninsula. This meeting was, eventually, to lead to Qatar becoming a nation state under the Al Thanis. For a time Ottomans took up a rather nominal control of the country, with a base in Doha, with the acquiescence of Qassim Al Thani, who wished to consolidate his control of the area. However, disagreement over tribute and interference in internal affairs arose which eventually led to battle in 1893. The Ottomans were defeated and retreated to their small fort in the centre of Doha, where they remained until they finally left during the first world war. Partly as a result of the departure of the Ottomans, Qatar was made a formal British protectorate in 1916, with Doha as its capital.
At about 1900 Doha had a population of around 12,000 and around 350 pearling boats. However, the growth of trade in cultured pearls from Japan began to impact upon the region, and this was exacerbated by the depression of the 1930s.
The exploitation of Qatar's oil reserves after the end of the second world war was to save the city, although it was to be some time before the source of their current and future wealth – natural gas – was exploited.
Buildings at the time were simple dwellings of one or two rooms, built from mud, stone and coral. However, the Amirs of Qatar were not long in exploiting the new-found wealth, and slum areas were quickly razed to be replaced by more modern buildings. As with other countries in the region, in this rush to modernize much of the country’s heritage was lost, and in Doha now there is only a single remaining wind tower. The astonishing development of Doha, and the changing shape of the bay, can be seen to this day in
