In what year did the agreement with the Dutch to divide the area and introduce naval patrols occur?

The agreement with the Dutch to divide the area and introduce naval patrols occurred in 1824. This agreement, known as the Anglo-Dutch Treaty of 1824, was significant because it formalized the division of influence over various territories in Southeast Asia, particularly in relation to the colonial interests of Britain and the Netherlands.

The treaty was a strategic move to reduce conflicts over territory and trade routes, leading to increased naval cooperation and joint efforts to patrol crucial shipping lanes. By establishing a clear understanding between the two nations, it aimed to create stability in the region during a time when colonial power dynamics were rapidly shifting. This historical context showcases the importance of diplomacy and agreements in managing international relations during the colonial period.

The other years mentioned do not coincide with the signing of the treaty, making them less relevant in this context.