RedHat 7.1 is not 10 years old. It came out on March 5, 2015.
RHEL (Red Hat Enterprise Linux) 7.1 came out on March 5, 2015, not Red Hat Linux 7.1. It came out on April 16, 2001, when Fedora was still 5 years away from release.
Wrong 7.1, buddy. Red Hat (not enterprise) Linux 7.1 came out in 2001. RHEL derives from Red Hat 9, released in 2003.