Question : Why all other areas must be connected to ospf area 0(backbone)?

What I have read and know till now is since ospf behaves like distance vector protocol for inter area communication hence it is vulnerable to routing loops that’s why all the ABRs must be connected to ospf area0 and interarea communication happens through backbone area ….but you may ask that how distance vector in inter … More Question : Why all other areas must be connected to ospf area 0(backbone)?