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

Yes, the two civilizations both existed around 1947 CE.

Which lasted longer, Ethiopia or Republic of India?

Ethiopia lasted longer (171 years).

Ethiopia: Afrika; Republic of India: Güney Asya

Ethiopia (1855 CE – present) and Republic of India (1947 CE – present) lived in the same era.

	Ethiopia	Republic of India
Period	1855 CE – present	1947 CE – present
Duration	171 years	79 years
Region	Afrika	Güney Asya
Capital	—	Yeni Delhi
Type	Country	Republic
Government	Federasyon	Federal Parlamenter Cumhuriyet
Religion	—	Hinduizm, İslam, diğerleri
Language	—	Hintçe, İngilizce
Peak population	112,078,730	1,400,000,000
Rulers	11	8

Federal Democratic Republic of Ethiopia · Africa

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

Did Ethiopia and Republic of India exist in the same era?: Yes, the two civilizations both existed around 1947 CE.
Which lasted longer, Ethiopia or Republic of India?: Ethiopia lasted longer (171 years).
Which regions did Ethiopia and Republic of India rule?: Ethiopia: Afrika; Republic of India: Güney Asya