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

Yes, the two civilizations both existed around 1947 CE.

Which lasted longer, Thailand or Republic of India?

Thailand lasted longer (244 years).

Thailand: Asya; Republic of India: Güney Asya

Thailand (1782 CE – present) and Republic of India (1947 CE – present) lived in the same era.

	Thailand	Republic of India
Period	1782 CE – present	1947 CE – present
Duration	244 years	79 years
Region	Asya	Güney Asya
Capital	—	Yeni Delhi
Type	Country	Republic
Government	Krallık	Federal Parlamenter Cumhuriyet
Religion	—	Hinduizm, İslam, diğerleri
Language	—	Hintçe, İngilizce
Peak population	69,625,582	1,400,000,000
Rulers	35	8

Kingdom of Thailand · Asia

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

Did Thailand and Republic of India exist in the same era?: Yes, the two civilizations both existed around 1947 CE.
Which lasted longer, Thailand or Republic of India?: Thailand lasted longer (244 years).
Which regions did Thailand and Republic of India rule?: Thailand: Asya; Republic of India: Güney Asya