Answer:
Conquering Nuwakot was essential for the unification, as it lay between Kathmandu and the Gorkha District, making it a vital trading route to Tibet. On his return to Gorkha from Varanasi, Prithivi Narayan Shah first took steps to defeat Nuwakot in the diplomatic field.
Nationality: Gorkha Kingdom, Nepal
Children: Pratap Singh Shah, Bahadur Shah