How did prithvi narayan shah got victory over Kathmandu valley?

Prithvi Narayan Shah, the founder of modern Nepal, achieved victory over the Kathmandu Valley through a combination of military strategy, political alliances, and astute diplomacy. After unifying various smaller kingdoms, he launched a campaign against the Malla kingdoms of the valley starting in the mid-18th century. His forces, utilizing superior tactics and local support, captured key cities like Kathmandu, Bhaktapur, and Patan by 1769. This conquest laid the foundation for a unified Nepal and marked a significant expansion of his Gorkha kingdom.