sentences:  The "Chaubisi" were annexed during the unification of Nepal from 1744 to 1810.Prithvi Narayan Shah unified about half the 24 principalities, the entire Kathmandu Valley around the present-day Nepali capital Kathmandu and additional principalities further east before dying in 1775.Annexation of the rest of the 24 proceeded under his son Pratap Singh Shah (ruled 1775-77) and grandson Rana Bahadur Shah (ruled 1777-1799).