paragraph_text: In astronomy, Al-Battani improved the measurements of Hipparchus, preserved in the translation of Ptolemy's Hè Megalè Syntaxis (The great treatise) translated as Almagest. Al-Battani also improved the precision of the measurement of the precession of the Earth's axis. The corrections made to the geocentric model by al-Battani, Ibn al-Haytham, Averroes and the Maragha astronomers such as Nasir al-Din al-Tusi, Mo'ayyeduddin Urdi and Ibn al-Shatir are similar to Copernican heliocentric model. Heliocentric theories may have also been discussed by several other Muslim astronomers such as Ja'far ibn Muhammad Abu Ma'shar al-Balkhi, Abu-Rayhan Biruni, Abu Said al-Sijzi, Qutb al-Din al-Shirazi, and Najm al-Dīn al-Qazwīnī al-Kātibī.

paragraph_text: Since he took power in 1995, Hamad bin Khalifa al-Thani believed Qatar could find security only by transforming itself from a Saudi appendage to a rival of Saudi Arabia. Saudi Arabia withdrew its ambassador to Doha from 2002 to 2008 to try to pressure Qatar to curb its individualistic tendencies. This approach broadly failed. The Arab Spring left a power vacuum which both Saudi Arabia and Qatar sought to fill, with Qatar being supportive of the revolutionary wave and Saudi Arabia opposing it; since both states are allies of the United States, they avoid direct conflict with one another. Qatar has had differences with other Arab governments on a number of issues: it broadcasts Al Jazeera; it is accused of maintaining good relations with Iran; and it has supported the Muslim Brotherhood in the past. Qatar has been accused of sponsoring terrorism. Some countries have faulted Qatar for funding rebel groups in Syria, including al-Qaeda’s affiliate in Syria, the al-Nusra Front, although the Saudis have done the same. Qatar has allowed the Afghan Taliban to set up a political office inside the country. Qatar is a close ally of the United States, hosting the largest American base in the Middle East, Al Udeid Air Base.

paragraph_text: Between 1528 and 1540, armies of Muslims, under the Imam Ahmad ibn Ibrihim al - Ghazi, entered Ethiopia from the low country to the south - east, and overran the Abyssinian Kingdom, obliging the Emperor to take refuge in the mountain fastnesses. In this remote location, the ruler again turned to the Portuguese. João Bermudes, a subordinate member of the mission of 1520, who had remained in the country after the departure of the embassy, was, according to his own statement (which is untrustworthy), ordained successor to the Abuna (archbishop), and sent to Lisbon. Bermudes certainly came to Europe, but with what credentials is not known.

paragraph_text: Al-Hamidiyah (, ) is a town on the Syrian coast, about 3 km from the Lebanese border. The town was founded in a very short time on the direct orders of the Ottoman Sultan ‘Abdu’l-Hamid II around 1897, to serve as a refuge for the Greek-speaking Muslim Cretan community, forced to leave Crete during the 1897-98 Greco-Turkish War and resettled by the Sultan in Hamidiyah and other coastal areas of the Levant and as far as Libya. The majority still speak Cretan Greek in their daily lives. According to the Syria Central Bureau of Statistics, al-Hamidiyah had a population of 7,404 in the 2004 census.

paragraph_text: Al-Zubair District is a district in Basra Governorate, Iraq. It seat is the city of Al-Zubair. In the 1880s some Najd tribes immigrated to al-Zubair due to the fact that Najd had nothing to offer, but around 1945s they returned to their home (Saudi Arabia) after it has changed notably. In the early 1990s, Saddam Hussein hoped to make al-Zubair province number 19 and annex it to Kuwait after invading. The failure of the Invasion of Kuwait put rest to this idea. The district is majority Sunni of Maliki .

paragraph_text: Joseph Fadelle (born Mohammed al-Sayyid al-Moussawi - Arabic: محمد السيد الموسوي), is a Roman Catholic convert from Islam and a writer born in 1964 in Iraq in a Muslim Shiite family.

paragraph_text: The presence of Islam in Guam is quite small, centered on the island's only mosque, the Masjid Al-Noor in Mangilao. Muslims in Guam are from a wide variety of backgrounds, both originating in traditionally Muslim countries, as well as Chamorro converts and mainland Americans.

paragraph_text: Muhammad also ordered another siege on the Banu Qurayza during the Invasion of Banu Qurayza, because according to Muslim tradition he had been ordered to do so by the angel Gabriel. Al-Waqidi claims Muhammad had a treaty with the tribe which was torn apart. Stillman and Watt deny the authenticity of al-Waqidi. Al-Waqidi has been frequently criticized by Muslim writers, who claim that he is unreliable. 600-900 members of the Banu Qurayza were beheaded after they surrendered (according to Tabari and Ibn Hisham). Another source says all Males and 1 woman beheaded (according to Sunni Hadith). Two Muslims were killed

paragraph_text: Under al-Mu'tadid he served as commander of the caliph's personal guard and led various expeditions against Bedouins and other restive elements in Iraq, while al-Muqtafi dispatched him in 906 against the Qarmatians. After al-Muqtafi's death, he played a decisive role in the suppression of the palace coup that briefly deposed al-Muqtadir in favour of Abdallah ibn al-Mu'tazz. He was then named treasurer ("khazin") and chief of security ("sahib al-shurta") to the Caliph. He died in 914.

paragraph_text: Al-Mu'tadid was the son of al-Muwaffaq, who was the regent and effective ruler of the Abbasid state during the reign of his brother, Caliph al-Mu'tamid. As a prince, the future al-Mu'tadid served under his father during various military campaigns, most notably in the suppression of the Zanj Rebellion, in which he played a major role. When al-Muwaffaq died in June 891 al-Mu'tadid succeeded him as regent. He quickly sidelined his cousin and heir-apparent al-Mufawwad, and when al-Mu'tamid died in October 892, he succeeded to the throne. Like his father, al-Mu'tadid's power depended on his close relations with the army. These were first forged during the campaigns against the Zanj and were reinforced in later expeditions which the Caliph led in person: al-Mu'tadid would prove to be the most militarily active of all Abbasid caliphs. Through his energy and ability, he succeeded in restoring to the Abbasid state some of the power and provinces it had lost during the turmoil of the previous decades.

paragraph_text: In October 2012 the number of ongoing conflicts in Myanmar included the Kachin conflict, between the Pro-Christian Kachin Independence Army and the government; a civil war between the Rohingya Muslims, and the government and non-government groups in Rakhine State; and a conflict between the Shan, Lahu and Karen minority groups, and the government in the eastern half of the country. In addition al-Qaeda signalled an intention to become involved in Myanmar. In a video released 3 September 2014 mainly addressed to India, the militant group's leader Ayman al-Zawahiri said al-Qaeda had not forgotten the Muslims of Myanmar and that the group was doing "what they can to rescue you". In response, the military raised its level of alertness while the Burmese Muslim Association issued a statement saying Muslims would not tolerate any threat to their motherland.

paragraph_text: In astronomy, Muḥammad ibn Jābir al-Ḥarrānī al-Battānī improved the precision of the measurement of the precession of the Earth's axis. The corrections made to the geocentric model by al-Battani, Averroes, Nasir al-Din al-Tusi, Mu'ayyad al-Din al-'Urdi and Ibn al-Shatir were later incorporated into the Copernican heliocentric model. Heliocentric theories were also discussed by several other Muslim astronomers such as Al-Biruni, Al-Sijzi, Qotb al-Din Shirazi, and Najm al-Dīn al-Qazwīnī al-Kātibī. The astrolabe, though originally developed by the Greeks, was perfected by Islamic astronomers and engineers, and was subsequently brought to Europe.

paragraph_text: The Battle of Las Navas de Tolosa, known in Arab history as the Battle of Al-Uqab (), took place on 16 July 1212 and was an important turning point in the "Reconquista" and in the medieval history of Spain. The Christian forces of King Alfonso VIII of Castile were joined by the armies of his rivals, Sancho VII of Navarre, Peter II of Aragon and Afonso II of Portugal, in battle against the Almohad Muslim rulers of the southern half of the Iberian Peninsula. The Caliph al-Nasir ("Miramamolín" in the Spanish chronicles) led the Almohad army, made up of people from the whole Almohad empire. Most of the men in the Almohad army came from the African side of the empire.

paragraph_text: Sheikha Al-Mayassa bint Hamad bin Khalifa Al-Thani (; born 1983) is the sister of Qatar's ruling Emir Tamim bin Hamad Al Thani, and daughter of the country's Father Emir Hamad bin Khalifa Al Thani and former First Lady Moza bint Nasser. Al-Mayassa was declared the most influential person in art on ArtReview's Power 100, and prominently appears on the Time 100, and Forbes' The World's 100 Most Powerful Women. Al-Mayassa serves as Chairperson of Qatar Museums, and it was reported by Bloomberg that her annual acquisition budget on behalf of the organization is estimated at $1 billion.

paragraph_text: Abd al-Qadir al-Husayni (), also spelled Abd al-Qader al-Husseini (1907 – 8 April 1948) was a Palestinian Arab nationalist and fighter who in late 1933 founded the secret militant group known as the Organization for Holy Struggle ("Munathamat al-Jihad al-Muqaddas"), which he and Hasan Salama commanded as the Army of the Holy War ("Jaysh al-Jihad al-Muqaddas") during the 1936–39 Arab revolt and during the 1948 war.

paragraph_text: The Muslim conquest of the Levant (Arabic: اَلْـفَـتْـحُ الْإٍسْـلَامِيُّ لِـلـشَّـامِ ‎, Al - Faṫṫḥul - Islāmiyyuash - Shām) or Arab conquest of the Levant (Arabic: اَلْـفَـتْـحُ الْـعَـرَبِيُّ لِـلـشَّـامِ ‎, Al - Faṫṫḥul - ʿArabiyyu Lish - Shām) occurred in the first half of the 7th century, and refers to the conquest of the region known as the Levant or Shaam (Arabic: شَـام ‎, 'Syria'), later to become the Islamic Province of Bilad al - Sham, as part of the Islamic conquests. Arab Muslim forces had appeared on the southern borders even before the death of prophet Muhammad in 632, resulting in the Battle of Mu'tah in 629, but the real invasion began in 634 under his successors, the Rashidun Caliphs Abu Bakr and Umar ibn Khattab, with Khalid ibn al - Walid as their most important military leader.

paragraph_text: It's generally accepted that there are around 750 verses in the Quran dealing with natural phenomenon. In many of these verses the study of nature is "encouraged and highly recommended," and historical Islamic scientists like Al-Biruni and Al-Battani derived their inspiration from verses of the Quran. Mohammad Hashim Kamali has the stated that "scientific observation, experimental knowledge and rationality" are the primary tools with which humanity can achieve the goals laid out for it in the Quran. Ziauddin Sardar built a case for Muslims having developed the foundations of modern science, by highlighting the repeated calls of the Quran to observe and reflect upon natural phenomenon. "The 'scientific method,' as it is understood today, was first developed by Muslim scientists" like Ibn al-Haytham and Al-Biruni, along with numerous other Muslim scientists.

paragraph_text: Battle of Namaraq () (634 CE) was a conflict between Muslims and the Sasanians that occurred in Namaraq, near modern-day Kufa (Iraq). During the Khilafat of Abu Bakr, Muslims under the command of Musana and Khalid bin Walid conquered Al-Hirah, a part of the Persian Empire. The Persians became furious and determined to recover Al-Hirah from the Muslims. Rostam Farrokhzād, a famous Sasanian general, sent some of his relatives from the Ispahbudhan family along with some Persian generals. Khalid bin Walid had already left for Syria so Musana had to fight alone. Umar sent Abu Ubaid with reinforcements. In the battle that followed the Persians were defeated.

paragraph_text: The Prime Minister of Iraq is Iraq's head of government. The Prime Minister was originally an appointed office, subsidiary to the head of state, and the nominal leader of the Iraqi parliament. Under the newly adopted constitution the Prime Minister is to be the country's active executive authority. Nouri al - Maliki (formerly Jawad al - Maliki) was selected to be Prime Minister on 21 April 2006. On 14 August 2014 al - Maliki agreed to step down as prime minister of Iraq to allow Haider al - Abadi to take his place.

paragraph_text: Tamana al-Ghab (, also spelled Tamaanat al-Ghab) is a village in northern Syria, administratively part of the Hama Governorate, located northwest of Hama. It is situated in the al-Ghab plain, east of the Orontes River. It is abutted by al-Ramlah to the north and Rasif to the south with other nearby localities including center Hurriya to the southeast, al-Huwash to the east, al-Amqiyah al-Tahta to the northeast, al-Ziyarah to the north, Nabl al-Khatib to the west and Shathah to the southwest. According to the Syria Central Bureau of Statistics (CBS), Tamana al-Ghab had a population of 2,696 in the 2004 census. Its inhabitants are predominantly Sunni Muslims.

Question: When did Muslim armies invade the country containing Al-Hamidiyah, along with the country of citizenship of the ruler following Al-Mu'tamid?
Answer: in 634