In what century did the Trucial States come under British control for foreign affairs?

The correct answer is the 19th century because it was during this period that the Trucial States, a group of sheikhdoms along the southern coast of the Persian Gulf, established treaties with the British Empire. These agreements allowed Britain to take responsibility for the foreign affairs of the Trucial States, which were seeking protection against external threats and piracy prevalent in the region at that time. The first of these treaties was signed in 1820, marking the beginning of British involvement in the region.

The British control had significant implications for the political landscape, as it aimed to ensure peace and stability in the vital trade routes of the Gulf. The relationship continued to evolve throughout the 19th century, leading to the eventual formation of modern-day United Arab Emirates. Understanding this historical context is crucial, as it sets the stage for the political developments that followed in the region.

The other time periods do not apply because they do not coincide with the significant treaties and control established by the British government over the Trucial States. The 15th century predates the formation of these agreements, and the 18th century does not reflect the timeline which marks the beginning of this colonial arrangement. The 20th century comes after the agreements were already