The questioned as posed is unclear since "developed" has multiple different meanings.
If it is asking when the lands that formed Kurdistan were developed into industrialized centers with modern technologies, this depends entirely on the industrialization of the current occupying regimes. Since Turkey and Iran modernized in the 1930s-1960s, it was during this period that there was corresponding development in Turkish and Iranian Kurdistan. Of course, since Kurdistan is an outlying region in both of these states, the development occurred much more slowly and much less completely. Iraqi Kurdistan benefited from having the petroleum wells in the Mosul area in terms of development, but true development for Iraqi Kurdistan has only come with autonomy as granted by the current Republic of Iraq (Post-Saddam). Syrian Kurdistan is still mostly rural and has not been properly developed at all.
If it is asking when the nationalistic sentiment of the Kurds finally found a voice, this happened in fits and starts in the late 1800s and early 1900s. Kurdish Nationalism became more militant in the 1960s and onwards.
Erbil /Hawler/ is the largest city in kurdistan of Iraq
Kurdistan - Estimated area of 74,000 to 151,000 sq. miles
Currently, Kurdistan is not a united country. As a result the different regions of Kurdistan are ruled differently. Only in Iraq do the Kurds have enough autonomy to have their own elected officials. Massoud Mustafa Barzani is the President of Iraqi Kurdistan.
Kurdistan is a roughly defined region in the Middle East that spans across parts of Turkey, Iraq, Iran, and Syria. It is home to the Kurdish people who have their own distinct language and culture. The boundaries of Kurdistan are not officially recognized by any government.
Sanandaj is the capital of Eastern Kurdistan (occupied by Iran), Al-Qamishli is the capital of Western Kurdistan (occupied by Syria), Erbil (which the Kurds call "Hawler") is the Capital of Southern Kurdistan (occupied by Iraq) and Diyarbakir (which the Kurds call "Amed") is the capital of Northern Kurdistan (occupied by Turkey).
Erbil /Hawler/ is the largest city in kurdistan of Iraq
ugh- kurdistan is part of Iraq
The population of Kurdistan Province is 1,440,156.
Kurdistan Airlines was created in 2004.
Kingdom of Kurdistan was created in 1922.
Kingdom of Kurdistan ended in 1924.
Yes. People have manners in Iraqi Kurdistan.
Kurdistan didn't got freedom and it won't.
The majority population of Kurdistan is made of Kurds.
The area of Iraqi Kurdistan is 40,643 square kilometers.
An organization called the PKK is the main supporter of an independent Kurdistan. No single nation on earth has publicly acknowledged to be a supporter of Kurdistan.
In the case of Turkish and Iranian Kurdistan, you get VISAS to those nations and then proceed to go to the Kurdish-majority regions. In the case of Iraqi Kurdistan, you get a special VISA to visit Iraqi Kurdistan from the Iraqi Embassy or upon arrival in Iraqi Kurdistan (if you are a national from certain countries and are arriving in Iraqi Kurdistan from somewhere other than Iraq). In the case of Syrian Kurdistan, it is currently STRONGLY discouraged to go to Syrian Kurdistan. Although it is among the safest areas in Syria, that is not saying much.