(This article is courtesy of Wikipedia’s web-site)
It appears that the land of the Emirates has been occupied for many thousands of years. Stone tools recovered from Jebel Faya in the emirate of Sharjah reveal a settlement of people from Africa some 127,000 years ago and a stone tool used for butchering animals discovered at Jebel Barakah on the Arabian coast suggests an even older habitation from 130,000 years ago. There is no proof of contact with the outside world at that stage, although in time it developed with civilization in Mesopotamia and Iran. This contact persisted and became wide-ranging, probably motivated by trade in copper from the Hajar Mountains, which commenced around 3000 BCE. In ancient times, Al Hasa (today’s Eastern Province of Saudi Arabia) was part of Al Bahreyn and adjoined Greater Oman (today’s UAE and Oman). From the second century AD, there was a movement of tribes from Al Bahreyn towards the lower Gulf, together with a migration among the Azdite Qahtani (or Yamani) and Quda’ah tribal groups from south-west Arabia towards central Oman. Sassanid groups were present on the Batinah coast. In 637, Julfar (in the area of today’s Ra’s al-Khaimah) was an important port that was used as a staging post for the Islamic invasion of the Sassanian Empire. The area of the Al Ain/Buraimi Oasis was known as Tu’am and was an important trading post for camel routes between the coast and the Arabian interior .
The earliest Christian site in the UAE was first discovered in the 1990s, an extensive monastic complex on what is now known as Sir Bani Yas Island and which dates back to the 7th century. Thought to be Nestorian and built-in 600 AD, the church appears to have been abandoned peacefully in 750 AD. It forms a rare physical link to a legacy of Christianity which is thought to have spread across the peninsula from 50 to 350 AD following trade routes. Certainly, by the 5th century, Oman had a bishop named John – the last bishop of Oman being Etienne, in 676 AD.