Did Tanzania and Republic of India exist in the same era?

Yes, the two civilizations both existed around 1961 CE.

Which lasted longer, Tanzania or Republic of India?

Republic of India lasted longer (79 years).

Tanzania: Afrika; Republic of India: Güney Asya

Tanzania (1961 CE – present) and Republic of India (1947 CE – present) lived in the same era.

	Tanzania	Republic of India
Period	1961 CE – present	1947 CE – present
Duration	65 years	79 years
Region	Afrika	Güney Asya
Capital	—	Yeni Delhi
Type	Country	Republic
Government	Cumhuriyet	Federal Parlamenter Cumhuriyet
Religion	—	Hinduizm, İslam, diğerleri
Language	—	Hintçe, İngilizce
Peak population	58,005,463	1,400,000,000
Rulers	7	8

United Republic of Tanzania · Africa

The world's largest democracy. It gained independence through Gandhi's nonviolent resistance movement. Unity in diversity.

Did Tanzania and Republic of India exist in the same era?: Yes, the two civilizations both existed around 1961 CE.
Which lasted longer, Tanzania or Republic of India?: Republic of India lasted longer (79 years).
Which regions did Tanzania and Republic of India rule?: Tanzania: Afrika; Republic of India: Güney Asya