The 1st and 2nd division was Launched alongside one another in 1929. In 1977, Segunda División B was Established to interchange Tercera División as being the third tier. Tercera División has given that that been the fourth tier. An summary of the current nationwide league process is presented in table https://gunnerzuqmg.tokka-blog.com/40294050/5-simple-statements-about-what-is-la-liga-explained