Hatra or Kingdom of Araba is one of the oldest Arab kingdoms in the Fertile Crescent, specifically in the plain north-west of Mesopotamia, which is in western Iraq and eastern Syria currently stationed Hatra in urban areas, which lies to the south-west of the city of Mosul, a distance of 110 kilometers City. And away from the ancient city of Ashur about 70 km. Hatra appeared in the second century AD and ruled for nearly four kings rule lasted percent a year. City urban almost round, diameter of about Kilomitrin surrounded by a moat of a deep tight side and surrounded by the wall is supported by 163 towers, and this wall consists of two walls each of which is 15 o'clock and 2.5 m and between 12:00 distance at the north gate
 (Kingdom of Araba) its architecture and arts and weapons and their industries, urban areas were in the level of Rome in terms of progress as those of a sophisticated heating and watchtowers Court and inscriptions carved mosaics and coins and statues of system pools found as they hit the money on the Greek and Romanian way and amassed great fortunes as a result of their prosperity economic ..
An ancient script found  . says: "Sentrouk is the king of the Arabs." Sentrouk and called on Arab history Balsatron famous story of his betrayal of his daughter. Try the Persians and the Romans invaded repeatedly where the Roman emperor failed Trahan, as well as the Roman Emperor Septimius Severus in 199 AD after he finished both Babylon and Seleucia Tesfon because the population defended defense stubborn, and used bows vehicle aimed arrows at once and killed by some of the private Emperor National Guard. And defeated the Persian Emperor Army Ardeshir knew Hatra its architecture and arts and weapons and their industries, and the urban areas which was founded in the second century BC in the level of Rome in terms of progress as those of a sophisticated heating and watchtowers Court and inscriptions carved mosaics and coins and statues of system pools found to prominent figures that City ruled the city
The first, which took over the entire area of the island, however, until the horse fell in 241 AD and destroyed a heavily damaged and prevent people from carrying weapons. That was the end of the Kingdom of Arabia.
Also found a dirt line surrounds the city from all sides, half a kilometer outside the fence is not known if the wall externally or is it the wisest ring out enemy siege of the city, on the edge Thqa a number of castles. And the city has marked the location occupies the commercial and military significance, as well as an abundance of fresh water, and its territory.
 
مملکة الحضر أو مملکة عربايا هي من أقدم الممالک العربية في الهلال الخصيب وتحديداً في السهل الشمال الغربي من وادي الرافدين الذي هو غرب العراق وشرق سوريا حالياً، تمرکزت مملکة الحضر في مدينة الحضر التي تقع إلى الجنوب الغربي من مدينة الموصل على مسافة 110 کيلومتراً. وتبعد عن مدينة آشور القديمة حوالي 70 کيلومتراً. ظهرت مملکة الحضر في القرن الثاني الميلادي وحکمها أربعة ملوک استمر حکمهم قرابة المائة عام.
عرفت مملکة الحضر (مملکة عربايا) بهندستها المعمارية وفنونها وأسلحتها وصناعاتها، الحضر کانت على خطى  روما من حيث التقدم حيث وجد فيها حمامات ذات نظام تسخين متطور وأبراج مراقبة ومحکمة ونقوش منحوته وفسيفساء وعملات معدنية وتماثيل کما ضربوا النقود على الطريقة اليونانية والرومانية وجمعوا ثروات عظيمة نتيجة لازدهارهم الاقتصادي..
وجدت کتابة على أحد المباني تقول:"سنطروق هو ملک العرب". وسنطروق يسمى في التاريخ العربي بالساطرون المشهور بقصة خيانة ابنته له. حاول الفرس والرومان غزوها مرارا حيث فشل الإمبراطور الروماني تراحان وکذلک الإمبراطور الروماني سيبتيموس سيفيروس سنة 199م بعد أن احتل کلاً من بابل وسلوقية طيسفون لأن سکانها دافعوا عنها دفاعاً عنيداً, واستخدموا أقواساً مرکبة ترمي سهمين مرة واحدة وقتلوا بها بعضاً من الحرس الوطني الخاص بالإمبراطور. وهزمت جيش الإمبراطور الفارسي .اردشير واخيرا سقطت بيد سابور الفارسي سنة 241م ودمرت تدميراً شديداً ومنع أهلها من حمل السلاح. وکانت تلک نهاية مملکة عربايا.