Did United States of America and Qing Dynasty exist in the same era?

Yes, the two civilizations both existed around 1776 CE.

Which lasted longer, United States of America or Qing Dynasty?

Qing Dynasty lasted longer (268 years).

United States of America: Kuzey Amerika; Qing Dynasty: Doğu Asya

United States of America (1776 CE – present) and Qing Dynasty (1644 CE – 1912 CE) lived in the same era.

	United States of America	Qing Dynasty
Period	1776 CE – present	1644 CE – 1912 CE
Duration	250 years	268 years
Region	Kuzey Amerika	Doğu Asya
Capital	Washington D.C.	Pekin (Beijing)
Type	Republic	Dynasty
Government	Federal Başkanlık Cumhuriyeti	Mutlak Monarşi
Religion	Hristiyanlık (çeşitli)	Konfüçyüsçülük / Budizm
Language	İngilizce	Mançuca / Çince
Peak population	331,000,000	400,000,000
Rulers	20	8

The world's first modern democratic republic. With its superpower status, the most influential state of the 20th and 21st centuries.

The last imperial dynasty of China. The largest Chinese state in terms of territorial extent and population.

Did United States of America and Qing Dynasty exist in the same era?: Yes, the two civilizations both existed around 1776 CE.
Which lasted longer, United States of America or Qing Dynasty?: Qing Dynasty lasted longer (268 years).
Which regions did United States of America and Qing Dynasty rule?: United States of America: Kuzey Amerika; Qing Dynasty: Doğu Asya