Why has the Jonas band split up?

The Jonas Brothers split up for a numerous number of reasons one of them being Kevin Jonas, the eldest got married to fellow girlfriend Danielle, and is now not singing or acting anymore. Another being Nick Jonas (youngest), and Joe Jonas (second eldest) wanted solo careers, to go separate ways. They are not mad, or upset with each other this is what they wanted. Nick and his band the Administration, now have anew sonq called Who I Am, check it out! I am not positive if these are true, but it is what was heard.