Repeated question asked from :

1) BPSC 2020 - see here

Similar questions asked on Dolphins :

1) UPSC CAPF 2023 - see here
2) JKPSC 2021 - see here
3) UPPCS 2022 - see here
4) 65th BPSC 2020 - see here
5) 66th BPSC 2021 - see here
6) UKPSC RO/ARO 2021 - see here
7) CAPF 2018 - see here
8) CSE 2019 - see here
9) CSE 2014 - see here
10) CSE 2015 - see here

Who is known as Red chera ?
- Senguttuvan

Who established trade relations with Roman empire ?
- Chera's

Udayinjiral belonged to which dynasty?
- Chera dynasty