Was Eritrea renamed after gaining independence

No, Eritrea was not renamed after gaining independence. It was known as Eritrea before and after gaining independence from Ethiopia in 1993.

Which colonizer gave independence to Eritrea and who was the prime Minister/president of the colonizer at that time

Eritrea gained independence from Ethiopia, not from a separate colonizer. The President of Ethiopia at the time of Eritrea's independence in 1993 was Meles Zenawi.

When did Eritrea gain independence from Italy and what methods were used to gain independence: arm-resustance, negotiations, external pressure or colonial power wish to leave?

Eritrea gained independence from Italy in 1941 at the end of World War II. The methods used to gain independence from Italy were a combination of armed resistance by Eritrean forces, external pressure from the Allied forces during World War II, and the desire of the colonial power (Italy) to leave the region. The Eritrean people fought against Italian colonial rule through various means, including armed resistance and political mobilization, which eventually led to the end of Italian colonial rule in Eritrea.

Who was the first PM/president of Eritrea and what is Eritrea's independence date?

Isaias Afwerki was the first President of Eritrea. Eritrea gained independence from Ethiopia on May 24, 1993.

Who was the Nationalist leader and what was the political party called?

The nationalist leader who played a significant role in Eritrea's struggle for independence was Isaias Afwerki. He was one of the founding members of the Eritrean People's Liberation Front (EPLF), a political and military organization that fought for Eritrea's independence from Ethiopia. EPLF later transformed into the People's Front for Democracy and Justice (PFDJ), the ruling party in Eritrea.

Who was the prime Minister of Italy at that time?