What was new hebrides called after gaining independence

After gaining independence, the New Hebrides was renamed as Vanuatu.

When did it gain Independence

Vanuatu gained independence from joint British and French colonial rule on July 30, 1980.

What ways did it achieve independence: arm-resustance, negotiations, external pressure or colonial power wish to leave

Vanuatu achieved independence through negotiations and external pressure. The country's independence was the result of a long process of political development and growing support for self-determination among the indigenous population, as well as pressure from international organizations and other countries. There were some tensions and conflicts during the process, but ultimately independence was achieved through peaceful means rather than armed resistance.