Answer:
Prithvi Narayan Shah is known as the Unifier of Nepal as he started the unification of Nepal, he declared and claimed that Nepal is Asal Hindustan or real land of Hindus as northern India was under Mughal rulers.
In 1801, he attacked Nuwakot and conquered the region. Shah also conquered the Amindada and Dolakha region. One of the wars he fought to unification campaign but defeated during the attack on Gorkha.
4 wars :
Kirtipur in 1765
Makwanpur in 1763
Bhadgaon and patan 1767
1801, he attacked Nuwakot