Nangarhar is one of the 34 provinces of Afghanistan

Provinces of Afghanistan

The provinces of Afghanistan are the primary administrative divisions of Afghanistan. As of 2004, there are thirty-four provinces in the country. Each province is further divided into smaller districts....

 in the east of the country. Its capital is the city of Jalalabad. The population of the province is 1,334,000, which consists mainly of ethnic Pashtuns

Pashtun people

Pashtuns or Pathans , also known as ethnic Afghans , are an Eastern Iranic ethnic group with populations primarily between the Hindu Kush mountains in Afghanistan and the Indus River in Pakistan...

 with a sizable community of Arabs and Pashais.
Once a major center of opium poppy

Opium poppy

Opium poppy, Papaver somniferum, is the species of plant from which opium and poppy seeds are extracted. Opium is the source of many opiates, including morphine , thebaine, codeine, papaverine, and noscapine...

 production in Afghanistan, the province had reportedly decreased its production of poppy by up to 95% in 2005, one of the success stories of the Afghan eradication program.