Sundanese language
Sundanese in the West Java region has a distinct layer due to the influence of the Javanese culture during the reign of the Sultanate of Mataram kingdom, the Sundanese language - especially in the Parahyangan area - have different layers starting from the most formal, or "halus/lemes" version, to the everyday "loma/lancaran" version and the informal or harsh version. Mataram Sultanate tried to take control over Java island, including Banten territory covering the whole West Java region, Sultanate of Banten could defend its territory except Parahyangan area. In the mountainous regions and most of present-day Banten, the loma version of Sundanese language is the most dominant. By contrast, this version is considered "harsh" by people from Parahyangan. Bantenese language is commonly used especially in the southern region of Banten such as Pandeglang Regency and Lebak Regency.