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).
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.
The UAE's oil reserves are the seventh-largest in the world while its natural gas reserves are the world's seventeenth-largest.
The land of the Emirates has been occupied for thousands of years.
And raising the flag of the State in a hostel in Dubai, which is known today as the "House of the Union".
  and Sheikh Zayed was elected president of the union, and Sheikh Rashid as Vice President of the UAE.
Emirates federal constitution approved in principle on the evening of December 1, 1971.
Holidays are given from the National Day until two days later.
Air shows are conducted while military processions are held at Abu Dhabi National Exhibition Centre for the rulers of the Emirates, members of the Federal National Council, and Emirati citizens.
In 2013, the UAE's population was 9.2 million, of which 1.4 million are Emirati citizens and 7.8 million are expatriates.
The country is a federation of seven emirates, and was established on 2 December 1971.