Complex sentence: After the second Anglo-Bhutan War in 1865, according to the Treaty of Sinchula, the eleven Bengal Dooars were annexed by the British Government, although the seven Assam Dooars had already been occupied by the British in 1942.
Split into simpler sentences: After the second Anglo-Bhutan War in 1865, according to the Treaty of Sinchula, the eleven Bengal Dooars were annexed by the British. The seven Assam Dooars had already been occupied by the British in 1942.