The primary and 2nd division was Started with each other in 1929. In 1977, Segunda División B was founded to interchange Tercera División given that the 3rd tier. Tercera División has considering that that been the fourth tier. An overview of the current national league procedure is offered in table https://k-o-nh-c-i-h-m-nay09764.blogrelation.com/46435540/what-is-la-liga-can-be-fun-for-anyone