Sheikhdom of Kuwait In the early 20th century, Kuwait immensely declined in regional economic importance, mainly due to many trade blockades and the world economic depression. Before Mary Bruins Allison visited Kuwait in 1934, Kuwait lost its prominence in long distance trade. During World War I, the British Empire imposed a trade blockade against Kuwait because Kuwait's ruler (Salim Al-Mubarak Al-Sabah) supported the Ottoman Empire, who was in the Central Powers. The British economic blockade heavily damaged Kuwait's economy. The Great Depression negatively impacted Kuwait's economy starting in the late 1920s. International trading was one of Kuwait's main sources of income before oil.
Transformation of the Ottoman Empire in particular suffered from heavy competition, and its commercial presence declined significantly, particularly after 1645, when the Ottomans and Venetians went to war over Crete. The English were by far the most successful European merchants in the empire during the seventeenth century, and they benefited from friendly relations between the two states. The Ottomans exported raw silk and imported cheap woolen cloth, as well as tin necessary for the production of military armaments. While in 1550 the Ottoman Empire was a patrimonial state in which all power was held exclusively by the sultan, by 1700 it had experienced a political