Plovdiv and Turkish-speaking at the census ("Xoraxane Roma"). For further information see the article Roma people in Plovdiv. Like elsewhere in the country, Roma people are subjected to discrimination and segregation (See the Bulgaria section of the article Antiziganism). After the Wars for National Union (Balkan Wars and World War I), the city became home for thousands of refugees from the former Bulgarian lands in Macedonia, Western and Eastern Thrace. Many of the old neighbourhoods are still referred to as "Belomorski", "Vardarski". Most of the Jews left the city after the foundation of Israel in 1948, as well as most of
Plovdiv the year. Mists are common in the cooler months, especially along the banks of the Maritsa. On average there are 33 days with mist during the year. The history of Plovdiv spans more than eight millennia. Numerous nations have left their traces on the cultural layers of the city. The earliest signs of habitation on the territory of Plovdiv date as far back as the 6th millennium BCE. Plovdiv has settlement traces including necropolises dating from the Neolithic era, roughly 6000–5000 BCE, like the mounds Yasa Tepe 1 in Philipovo district and Yasa Tepe 2 in Lauta park. Archaeologists have