Linguistic practices from A sociolinguistic perspective

In his definition of language, the Swiss linguist Saussure acknowledged that it is primarily social, although it is structural; Where he studies the language away from external contexts, only focusing on its four levels: phonetic, morphological, grammatical and semantic; However, linguistic studies have recently developed, and language has become studied in terms of its relationship to society, and a whole science has emerged called by several names, including: sociolinguistics, sociolinguistics, social linguistics, sociolinguistics, sociolinguistics, sociology of language, and sociology of language, all of which are terms for one science, and accordingly We pose the following problem: What is sociolinguistics? Or what is its definition? And when did it appear? And what is its subject? And what are its fields? Through this research paper: we will know sociolinguistics, mention its most prominent foundations, and we will address its fields, and its origins.