Vast Khorasan and its role on Abrisham road development

Vast Khorasan in eastern part of Iran including the lands that stands in south of Amo sea (Jeyhon) and Sir sea (sayhon), in the north Hendokish and from political sight were included Vararodan (Mavaraonnahr) and Kohestan (ghohestan).In the old time Vast khorasan were included all Eastern part, but state of Sistan. In the first age of Islam period Vararodan was a part of vast Khorasan and this vast state was made way up to western parts of China, especially today Sin kiang province and Afghanistan, Pamir and Hendokish mountains. Vast khorasn doesnt limited in Iran border and it was included big part of Afghanistan, Tajikistan, Torkamanestan, Uzbekistan and etc… Thus the wide part of central Asia that stands in vast Khorasan of Iran was a zone for entrance Iranian culture and the source of Iranian renaissance in the age of after Islam. Also Iran is stand on middle of fourworth zone, middle east, Persian gulf, Mazandaran sea, and central Asia that gives to Iran special role for connecting regions. Abrisham road is a passage of peace, global trade, relocation path of idea, opinion, knowledge, believes and one of the biggest international commercial road that pass from many big country and it was a worthy bridge between peoples that live on that times, also it was the zone that connected Iranian, Indian, China and Vararodan and Miyanrodan cultures and in many century for a long time Iran had this responsibility.