AAI ATC Junior Executive 25 Mar 2021 Shift 3 Paper

Sentences of a paragraph are given below in jumbled order. Arrange the sentences in the right order to form a meaningful and coherent paragraph.
A: Its people thrived on agriculture and enjoyed a happy community life.
B: The Sumerian civilization is the oldest civilization known to mankind.
C: The term Sumer is today used to designate southern Mesopotamia.
D: Sumer used to be a flourishing urban civilization till 3000 BC.