This study aimed to explore the linguistic factors that influence the development and diversification of World Englishes along with implications for language teaching, learning, and policy, and to examine the trends in research related to WEs. Using a systematic review process with MAXQDA 20.2.1, the findings indicate that research on World Englishes has focused on a variety of linguistic elements, with a particular emphasis on syntax, phonology, and discourse and pragmatics. The study also highlights the importance of understanding the cultural and linguistic contexts in which English is being used, as these contexts can have a significant impact on the linguistic features and pragmatic norms of different varieties of English. Regarding the challenges that learners face when learning WEs, the findings suggest that learners may struggle with the different semantic features and pragmatic norms of different WEs varieties. In terms of trends in research related to WEs, the findings show a growing interest in the study of WEs from various linguistic and cultural perspectives, including sociolinguistics, applied linguistics, and language education. However, there is a need for a more interdisciplinary approach to research on WEs, incorporating diverse perspectives and methodologies
