The origin and history of rice in Iran and the world

From the Achaemenid period, when a part of India was considered a part of the great Iranian empire, rice cultivation was more or less planted wherever there was plenty of water and warm weather, from the Indus River to the Herat River. During the Parthian era, rice was cultivated on the shores of the Caspian Sea (Gilan and Mazandaran) and present-day Khorasan. Rice cultivation was taught to the Greeks from the Iranians and was brought to Europe by the Arabs.
Determining the point or points of the world where rice originated is currently extremely difficult.
One is Asia and the other is Africa. These two regions should be considered the origin of rice. The place of origin of rice is considered to be in the continent of Southeast Asia and India and in the continent of Africa west of this continent.
Rice cultivation is perhaps the oldest cultivation in Asia. Killing it has been common for years before there is any historical evidence of human civilization. The oldest documents about rice cultivation date back to five thousand years ago. In ancient times, rice made its way from Southeast Asia to Malaya, the Philippines, and China, and it entered Japan from China or India a century before Christ.