What the purpose of the direct insurance company in writing reinsurance business by reciprocity agreements ?

The purpose of an insurer to write reinsurance business by reciprocity agreements as hereunder :-

1/ To extend their activites .

2/ To boost their premium income .

3/ To enhance their profit .

4/ To enhance market potential .

5/ To achieve more consistent claims ratio through greater diversification and more balance risk profile .

6/ To reduce outflow of foreign currency .

Thanking you.