During the course of 1915, Chaplin became a cultural phenomenon.

During November 1915 Einstein published several papers culminating in " The Field Equations of Gravitation " ( see Einstein field equations ).

During the course of the war, he took part in actions at Heligoland Bight ( 1914 ), Dogger Bank ( 1915 ) and Jutland ( 1916 ).

During World War I the use of flashbacks occurred in films from all the major European film-making countries as well, from Italy ( Tigre reale ) to Denmark ( Evangeliemandens Liv ) to Russia ( Grezy and Posle smerti ), where it arrived in 1915.

During World War I and the rise of Germanism, the ( Svecomans ) began covert collaboration with Imperial Germany, and from 1915 – 1917 a " Jäger " ( Jääkärit ) battalion consisting of 1, 900 Finnish volunteers was trained in Germany.

During the course of the war the area of Congress Poland became occupied by the Central Powers, with Warsaw captured by the Germans on 5 August 1915.

During 1915 the German Navy had some 15 Zeppelins in commission and was able to have two or more patrolling continuously at any one time, almost regardless of weather.

During heavy fighting he was captured by the Austrians in April 1915, when his division became isolated from the rest of the Russian forces.

During her years at Washington Seminary, Mitchell's brother, Stephens, was away studying at Harvard College ( 1915 – 1917 ), and he left in May 1917 to enlist in the army, about a month after the U. S. declared war on Germany.

During World War I, Vilnius and the rest of Lithuania was occupied by the German Army from 1915 until 1918.

During construction, 1915.

During autumn of 1915, the " Fokker Scourge " began to have an effect on the battlefront as Allied spotter planes were nearly driven from the skies.

During 1915 – 16, he taught philosophy at Harvard, then worked as an engineer for General Electric and wrote for the Encyclopedia Americana.

During World War I, the city was one of the focal points of Austro-Hungarian / German Gorlice-Tarnów Offensive of 1915, a military operation that changed the situation in the Eastern Front and resulted in major retreat of opposing Russian forces.

During World War I, the Allies in early 1915 used the island to try to capture the Dardanelles Straits, some 50 km away.

During the First World War he served in Galicia, Serbia and Bosnia and in 1915 he was promoted to the rank of First Lieutenant ( Oberleutnant ).

During World War I Great Yarmouth suffered the first aerial bombardment in the UK, by Zeppelin L3 on 19 January 1915.

During 1915 – 1931 a New Orleans streetcar line operated between New Orleans and Kenner.

During World War I the family settled in Harrogate, and Finzi began to study music at Christ Church, High Harrogate under Ernest Farrar from 1915.

During the invasion of the Balkans in 1915, Austro-Hungarian Empire had pushed the Serbian forces into Montenegro.

During World War I in 1914 and 1915 an unofficial Christmas truce took place, particularly that between British and German troops.

During World War I Rathenau held senior posts in the Raw Materials Department of the War Ministry, while becoming chairman of AEG upon his father's death in 1915.

During World War I, German dirigibles bombed Liepāja in January, 1915.

During Russian Empire occupation it was the capital of the Kovno Governorate from 1843 to 1915.

During the 20th century BC the Indo-European Hittites entered the region and gradually established a great empire which was destroyed by invaders in the 12th century.

During this period the region along with most of Eastern Australia was part of the ocean floor ; formations from this period include the Black Mountain Sandstone formation and the Pittman Formation consisting largely of quartz-rich sandstone, siltstone and shale.

During the Helvetic Republic ( 1798 – 1803 ), the county of Baden, the Freie Ämter and the region known as the Kelleramt were combined into the Canton of Baden.

During the 7th century, Arab armies made their way into the region of Afghanistan from Khorasan with the new religion of Islam.

During the late 2nd century, the main ethnic change in the northern Black sea region was the immigration, from the Vistula valley in the North, of the Goths and accompanying Germanic tribes such as the Taifali and the Hasdingi, a branch of the Vandal people.

During the post-Roman centuries of Germanic migration and settlement, the region afterwards included in the Diocese of Bamberg was inhabited for the most part by Slavs.

During their attempts at conquest in 1460 and again in 1491, the Incas established forts in the Central Valley of Chile, but they could not colonize the region.

During hurricane season, tropical cyclones occasionally affect the region.

During pre-Islamic and early Islamic times, Central Asia was a predominantly Iranian region that included the sedentary Eastern Iranic speaking Bactrians, Sogdians and Chorasmians, and the semi-nomadic Scythians and Alans.

During the Middle Ages, there were various systems involving elections or assemblies, although often only involving a small amount of the population, the election of Gopala in Bengal region of Indian Subcontinent, the Polish-Lithuanian Commonwealth ( 10 % of population ), the Althing in Iceland, the Løgting in the Faeroe Islands, certain medieval Italian city-states such as Venice, the tuatha system in early medieval Ireland, the Veche in Novgorod and Pskov Republics of medieval Russia, Scandinavian Things, The States in Tirol and Switzerland and the autonomous merchant city of Sakai in the 16th century in Japan.

During the Cold War era, the United States was keen to establish a military base in the Indian Ocean to counter Soviet influence in the region and protect the sea-lanes for oil transportation from the Middle East.

During the same time, a prominent school of bass players in the Czech region arose, which included Franz Simandl, Theodore Albin Findeisen, Josef Hrabe, Ludwig Manoly, and Adolf Mišek.

During the Formative Period, people of the region moved from the hunter-gather a simple farming into a more developed society, with permanent developments, an increase in agriculture and the use of ceramics.

During this period of French encroachment on the region, the United Provinces also took some areas of northern Flanders.

During the years of 1964 – 1985 several changes took place in Fortaleza which made the city a central region for industries.

During an extensive gene-mapping project, archaeologists analyzed the heritage of more than 110 modern grape cultivars, and narrowed their origin to a region in Georgia, where wine residues were also discovered on the inner surfaces of 8, 000-year-old ceramic storage jars.

During his second missionary journey, St. Paul of Tarsus, accompanied by Silas and Timothy (), visited the " region of Galatia ," where he was detained by sickness ().

During the Uruk phase, colonists and traders from Southern Iraq established important quarters in settlements throughout the northern part of the Levantine region ( e. g. Amuq ).

During this time the Kingdom of Yamkhad on the Euphrates, and of Qatna on the Orontes, were important city states of the Syrian region.

During the American Civil War, the oil-producing region spread over much of western Pennsylvania, up into western New York state, and down the Ohio River valley into the states of Ohio, Kentucky, and the western part of Virginia ( now West Virginia ).

During this period Russia expanded its empire into Central Asia, which was rich in raw materials, conquering the khanates of Kokand, Bokhara and Khiva, as well as the Trans-Caspian region.

During the Middle Ages and the Early Modern Period, Flanders was characterised by the presence of large urban centres (...) at the beginning of the nineteenth century this region ( Flanders ), with an urbanisation degree of more than 30 per cent, remained one of the most urbanised in the world.

During these eighty years the number of municipalities with more than 5, 000 inhabitants increased from only 21 to more than one hundred, concentrating nearly half of the Walloon population in this region.

During the day, the D and E layers become much more heavily ionized, as does the F layer, which develops an additional, weaker region of ionisation known as the F < sub > 1 </ sub > layer.

During the 2nd century AD Irish influence was at work in the region and by the 6th century the kingdom of Dál Riata was established.