Complex sentence: Although their early dealings with the British government were inclined to turbulence, and they were involvedin the Miranzai expeditions of 1851 and 1855, the only expedition specially sent against them was the Kurram expedition of 1856.
Split into simpler sentences: Although their early dealings with the British government were inclined to turbulence, and they were concerned in the Miranzai expeditions of 1851 and 1855. The only expedition specially sent against them was the Kurram expedition of 1856.