During the Late Bronze Age circa 2000 BC, they created an empire, the Hittite New Kingdom, which reached its height in the 14th century BC, controlling much of Asia Minor.

During the Age of Enlightenment, theologians and philosophers presented various philosophies and beliefs.

During the Viking Age, Birka ( Birca in medieval sources ), on the island of Björkö ( literally: " Birch Island ") in Sweden, was an important trading center which handled goods from Scandinavia as well as Central and Eastern Europe and the Orient.

During the past few centuries of detailed, scientific study of the Bronze Age, it has become clear that on the whole, the use of copper or bronze was only the most stable and therefore the most diagnostic part of a cluster of features marking the period.

During the Cenozoic, mammals proliferated from a few small, simple, generalized forms into a diverse collection of terrestrial, marine, and flying animals, giving this period its other name, the Age of Mammals, despite the fact that birds still outnumbered mammals two to one.

During the Gunpowder Age, armored cavalry become obsolete.

During the late Neolithic henge sites were constructed, single burials began to become more commonplace and by the Bronze Age it is possible that even where chambered cairns were still being built they had become the burial places of prominent individuals rather than of communities as a whole.

During the Renaissance Age the dagger was used as part of everyday dress, and daggers were the only weapon commoners were allowed to carry on their person.

During Japanese cinema's ' Golden Age ' of the 1950s, successful films included Rashomon ( 1950 ), Seven Samurai ( 1954 ) and The Hidden Fortress ( 1958 ) by Akira Kurosawa, as well as Yasujirō Ozu's Tokyo Story ( 1953 ) and Ishirō Honda's Godzilla ( 1954 ).

During Indian cinema's ' Golden Age ' of the 1950s, it was producing 200 films annually, while Indian independent films gained greater recognition through international film festivals.

During the Information Age ( circa 1971 – 1991 ), the Knowledge Age ( circa 1991 to 2002 ), and the Intangible Economy ( 2002 – present ) many see the primary factors of production as having become less concrete.

During what is often referred to as the Islamic Golden Age, in order for a scholar to be qualified to issue a fatwā, it was required that he obtained an ijazat attadris wa ' l-ifta (" license to teach and issue legal opinions ") from a Madrassah in the medieval Islamic legal education system, which was developed by the 9th century during the formation of the Madh ' hab legal schools.

During the Bronze Age, several artifacts from tumulus burials have been unearthed in central and southern Albania, showing close connection with sites in southwestern Macedonia and Lefkada, Greece.

During the Iron Age, the best tools and weapons were made from steel, particularly alloys which were produced with a carbon content between approximately 0. 30 % and 1. 2 % by weight.

During the early Iron Age Brythonic culture held sway, there being no evidence that the Roman occupation of southern Scotland extended to these islands.

During the Islamic Golden Age, there was a logical debate among Islamic philosophers and jurists whether the term Qiyas refers to analogical reasoning, inductive reasoning or categorical syllogism.

During his tenure at Harvard, he was, among many other things, an early student of the effect of the last Ice Age on North America.

During prehistoric times there was a succession of cultures that flourished in the land of present-day Moldova from the end of the Ice age up through the Neolithic Age, the Copper Age, the Bronze Age, and the beginning of the Iron Age, when historical records begin to be made about the people who lived in these lands.

During the Zemene Mesafint or " Age of Princes " of Ethiopia, Emperors became figureheads, controlled by warlords like Ras Mikael Sehul of Tigray, and by the Oromo Yejju dynasty, which later led to 17th century Oromo rule of Gondar, changing the language of the court from Amharic to Afaan Oromo.

During what is known as the Little Ice Age, Innocent VIII, in his papal bull Summis desiderantes ( 5 December 1484 ) instigated severe measures against magicians and witches in Germany.

During the Age of the Ajuuraan, the Somali sultanates and republics of Merca, Mogadishu, Barawa, Hobyo and their respective ports flourished, enjoying a lucrative foreign commerce with ships sailing to and coming from Arabia, India, Venetia, Persia, Egypt, Portugal and as far away as China.

During ascent, the external tank of the Space Shuttle Discovery sheds a piece of foam slightly smaller than the piece that caused the Space Shuttle Columbia disaster ; this foam does not strike the spacecraft.

During the Age of Discovery, the Roman Catholic Church established a number of Missions in the Americas and other colonies through the Augustinians, Franciscans and Dominicans in order to spread Christianity in the New World and to convert the Native Americans and other indigenous people.

During the Antarctic winter of 1902, in the confines of the iced-in Discovery, Shackleton edited the expedition's magazine The South Polar Times.

During 1988 the orchestra adopted an education policy which included the establishment of " LSO Discovery ", offering " people of all ages, from babies through music students to adults, an opportunity to get involved in music-making ".

During the 1990s, the Discovery Channel supported the implementation of Assignment: Media Literacy, a statewide educational initiative for K-12 students developed in collaboration with the Maryland State Board of Education.

During their stay at Fort Clatsop, the Corps of Discovery made many observations about the landscape and local life, as well as establishing relations with the local Clatsop Indians.

During the 13-day flight the crew of Discovery tested new equipment and procedures that increase the safety of space shuttles, and produced never-before-seen, high-resolution images of the Shuttle during and after its July 4 launch.

During the 13-day flight, the seven member crew attached the Z1 Truss and Pressurized Mating Adapter 3 to the International Space Station using Discovery ’ s robotic arm and performed four space walks to configure these elements.

During STS-41-D, Discovery traveled a total of and made 97 orbits.

During the mission, Discovery deployed three communications satellites into orbit.

During STS-26, Discovery became the first spacecraft to fly in space equipped with a VCU ( Voice Control Unit ), a computer capable of recognising and responding to human speech.

During the mission, Discovery deployed a single satellite, USA-48 ( NSSDC ID 1989-090B ).

During this press conference it was confirmed that the preparations of Atlantis for the next scheduled flight STS-121 are not being delayed while troubleshooting the sensor problem on Discovery.

During this time, long-term U. S. experiments aboard the Mir were moved into Discovery ’ s middeck locker area and the SPACEHAB single module in the orbiter ’ s payload bay, including the Space Acceleration Measurement System ( SAMS ) and the tissue engineering co-culture ( COCULT ) investigations, as well as two crystal growth experiments.

During this very successful mission the five-man crew aboard Shuttle Discovery deployed the East Tracking and Data Relay Satellite, and performed eight scientific / medical experiments.

During this nine-day mission the crew of Space Shuttle Discovery conducted atmospheric and solar studies in order to better understand the effect of solar activity on the Earth ’ s climate and environment, and deployed and retrieved the autonomous observatory Spartan.

During the 13-day flight, the seven member crew attached the Z1 Truss and Pressurized Mating Adapter 3 to the International Space Station using Discovery ’ s robotic arm and performed four space walks to configure these elements.

During the 10-day mission, the crew retrieved and secured the HST in Discovery ’ s payload bay.

During the Age of Discovery, 1450 – 1700, European Catholic rulers took a great interest in the missionary evangelization of indigenous peoples encountered in newly discovered lands.

During his 2006 flight on Space Shuttle Discovery, the second mission after the loss of Columbia, Kelly discussed the risks of flying the space shuttle:

During the STS-121 mission to the ISS, the crew of Discovery continued to test new equipment and procedures for the inspection and repair of the thermal protection system that is designed to increase the safety of the Shuttles.

During and after the Age of Discovery, European explorers, such as the Spanish conquistadors, encountered other groups of people who had never or only recently adopted agriculture, such as in the Pacific Islands, or lacked domesticated big mammals such as the people of the New Guinea Highlands.

During the four days of the petition, A Scientific Support for Darwinism received signatures at a rate 697, 000 percent higher than the Discovery Institute's petition, A Scientific Dissent from Darwinism, according to archaeologist R. Joe Brandon.

During the eight-day flight, the crew of Discovery, including Russian cosmonaut Sergei Krikalev, conducted a wide variety of biological, materials science, earth observation, and life science experiments.