The culture of the ethnic Khmers is fairly homogeneous throughout their geographic range. Regional dialects exist, but are mutually intelligible. The standard is based on the dialect spoken throughout the Central Plain, a region encompassed by the northwest and central provinces. The varieties of Khmer spoken in this region are representative of the speech of the majority of the population. A unique and immediately recognizable dialect has developed in Phnom Penh that, due to the city's status as the national capital, has been modestly affected by recent French and Vietnamese influence.