Keep scrolling down for answers and more stats ...
1.
Is the biggest in population
2.
Is the biggest in land area
3.
Is entirely located on the southern hemisphere
4.
Have the biggest amount of army
5.
Have the highest population of native tigers
6.
Was the place where the first BRIC summit was held
7.
Have writings in their flag
8.
Joined as an official member in 2010
9.
Hosted the BRICS Games in 2021
10.
Never have nukes in their history
11.
Have a declining population
12.
Was the first to establish a diplomatic relationship with Bhutan
13.
Don't have a diplomatic relationship with Paraguay
15.
Wasn't invited to Queen Elizabeth's funeral