Did South Africa and Republic of India exist in the same era?

Yes, the two civilizations both existed around 1947 CE.

Which lasted longer, South Africa or Republic of India?

South Africa lasted longer (116 years).

South Africa: Afrika; Republic of India: Güney Asya

South Africa (1910 CE – present) and Republic of India (1947 CE – present) lived in the same era.

	South Africa	Republic of India
Period	1910 CE – present	1947 CE – present
Duration	116 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	58,558,270	1,400,000,000
Rulers	9	8

Republic of South Africa · Africa

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

Did South Africa and Republic of India exist in the same era?: Yes, the two civilizations both existed around 1947 CE.
Which lasted longer, South Africa or Republic of India?: South Africa lasted longer (116 years).
Which regions did South Africa and Republic of India rule?: South Africa: Afrika; Republic of India: Güney Asya