paragraph_text: Birth control practices were generally adopted earlier in Europe than in the United States. Knowlton's book was reprinted in 1877 in England by Charles Bradlaugh and Annie Besant, with the goal of challenging Britain's obscenity laws. They were arrested (and later acquitted) but the publicity of their trial contributed to the formation, in 1877, of the Malthusian League -- the world's first birth control advocacy group -- which sought to limit population growth to avoid Thomas Malthus's dire predictions of exponential population growth leading to worldwide poverty and famine. By 1930, similar societies had been established in nearly all European countries, and birth control began to find acceptance in most Western European countries, except Catholic Ireland, Spain, and France. As the birth control societies spread across Europe, so did birth control clinics. The first birth control clinic in the world was established in the Netherlands in 1882, run by the Netherlands' first female physician, Aletta Jacobs. The first birth control clinic in England was established in 1921 by Marie Stopes, in London.

paragraph_text: To the north of China proper, the nomadic Xiongnu chieftain Modu Chanyu (r. 209–174 BC) conquered various tribes inhabiting the eastern portion of the Eurasian Steppe. By the end of his reign, he controlled Manchuria, Mongolia, and the Tarim Basin, subjugating over twenty states east of Samarkand. Emperor Gaozu was troubled about the abundant Han-manufactured iron weapons traded to the Xiongnu along the northern borders, and he established a trade embargo against the group. Although the embargo was in place, the Xiongnu found traders willing to supply their needs. Chinese forces also mounted surprise attacks against Xiongnu who traded at the border markets. In retaliation, the Xiongnu invaded what is now Shanxi province, where they defeated the Han forces at Baideng in 200 BC. After negotiations, the heqin agreement in 198 BC nominally held the leaders of the Xiongnu and the Han as equal partners in a royal marriage alliance, but the Han were forced to send large amounts of tribute items such as silk clothes, food, and wine to the Xiongnu.

paragraph_text: Evidence of Han-era mechanical engineering comes largely from the choice observational writings of sometimes disinterested Confucian scholars. Professional artisan-engineers (jiang 匠) did not leave behind detailed records of their work. Han scholars, who often had little or no expertise in mechanical engineering, sometimes provided insufficient information on the various technologies they described. Nevertheless, some Han literary sources provide crucial information. For example, in 15 BC the philosopher Yang Xiong described the invention of the belt drive for a quilling machine, which was of great importance to early textile manufacturing. The inventions of the artisan-engineer Ding Huan (丁緩) are mentioned in the Miscellaneous Notes on the Western Capital. Around 180 AD, Ding created a manually operated rotary fan used for air conditioning within palace buildings. Ding also used gimbals as pivotal supports for one of his incense burners and invented the world's first known zoetrope lamp.

paragraph_text: The Eastern Han, also known as the Later Han, formally began on 5 August 25, when Liu Xiu became Emperor Guangwu of Han. During the widespread rebellion against Wang Mang, the state of Goguryeo was free to raid Han's Korean commanderies; Han did not reaffirm its control over the region until AD 30. The Trưng Sisters of Vietnam rebelled against Han in AD 40. Their rebellion was crushed by Han general Ma Yuan (d. AD 49) in a campaign from AD 42–43. Wang Mang renewed hostilities against the Xiongnu, who were estranged from Han until their leader Bi (比), a rival claimant to the throne against his cousin Punu (蒲奴), submitted to Han as a tributary vassal in AD 50. This created two rival Xiongnu states: the Southern Xiongnu led by Bi, an ally of Han, and the Northern Xiongnu led by Punu, an enemy of Han.

paragraph_text: The M-1978 Koksan is a 170 mm self-propelled gun of North Korean design and manufacture. Very little information is available due to the secretive nature of the North Korean government. The designations "M-1978" and "Koksan" were given to the type by American military analysts, as they first became aware of it in that year in Koksan, North Korea.

paragraph_text: As of 2010, the maternal mortality rate was 560 deaths/100,000 live births, and the infant mortality rate was 59.34 deaths/1,000 live births. Female genital mutilation (FGM) is rare in the country, being confined to limited geographic areas of the country.

paragraph_text: Nigeria in recent years has been embracing industrialisation. It currently has an indigenous vehicle manufacturing company, Innoson Motors, which manufactures Rapid Transit Buses, Trucks and SUVs with an upcoming introduction of Cars. Nigeria also has few Electronic manufacturers like Zinox, the first Branded Nigerian Computer and Electronic gadgets (like tablet PCs) manufacturers. In 2013, Nigeria introduced a policy regarding import duty on vehicles to encourage local manufacturing companies in the country. In this regard, some foreign vehicle manufacturing companies like Nissan have made known their plans to have manufacturing plants in Nigeria. Ogun is considered to be the current Nigeria's industrial hub, as most factories are located in Ogun and more companies are moving there, followed by Lagos.

paragraph_text: The manufacturer of the Today sponge reports effectiveness for prevention of pregnancy of 89% to 91% when used correctly and consistently. When packaging directions are not followed for every act of intercourse, effectiveness rates of 84% to 87% are reported. Other sources cite poorer effectiveness rates for women who have given birth: 74% during correct and consistent use, and 68% during typical use.Studies of Protectaid have found effectiveness rates of 77% to 91%.Studies of Pharmatex have found perfect use effectiveness rates of over 99% per year. Typical use of Pharmatex results in effectiveness of 81% per year. Sponges may be used in conjunction with another method of birth control such as condoms to increase effectiveness.

paragraph_text: Karl Groos (10 December 1861, in Heidelberg – 27 March 1946, in Tübingen) was a philosopher and psychologist who proposed an evolutionary instrumentalist theory of play. His 1898 book on "The Play of Animals" suggested that play is a preparation for later life.

paragraph_text: Halsall is married to former Coronation Street and Wild at Heart actress, Lucy - Jo Hudson. They met on set and began dating in 2005. They married on 13 June 2009 in Cheshire. On 18 February 2013, via Twitter, the couple announced they were expecting their first child, a baby girl. On 8 September 2013, Hudson gave birth to their daughter, 9 days after her due date, named Sienna - Rae. The couple announced they were splitting in March 2016, and they got back together after several weeks apart.

paragraph_text: The Han-era Chinese used bronze and iron to make a range of weapons, culinary tools, carpenters' tools and domestic wares. A significant product of these improved iron-smelting techniques was the manufacture of new agricultural tools. The three-legged iron seed drill, invented by the 2nd century BC, enabled farmers to carefully plant crops in rows instead of casting seeds out by hand. The heavy moldboard iron plow, also invented during the Han dynasty, required only one man to control it, two oxen to pull it. It had three plowshares, a seed box for the drills, a tool which turned down the soil and could sow roughly 45,730 m2 (11.3 acres) of land in a single day.

paragraph_text: The subsequent Korean War, which lasted from 1950 to 1953, ended with a stalemate and has left the two Koreas separated by the Korean Demilitarized Zone (DMZ) up to the present day.

paragraph_text: The company was founded, as Escher Wyss & Cie., in 1805 by Hans Caspar Escher and Salomon von Wyss. Originally a textile spinning company, the two expanded the business to include a machine shop that manufactured textile machinery, water wheels, water turbines, power transmission equipment, and starting in 1835, ships, including boilers and steam engines.

paragraph_text: An icon in his country of birth, Ycaza's success inspired other diminutive Panamanian youngsters to pursue a career as a jockey. In 1962, "Sports Illustrated" magazine published an article about the "Spanish invasion" of American Thoroughbred horse racing led by Ycaza.

paragraph_text: In many countries, age is reckoned from the date of birth, and sometimes the birthday is celebrated annually. East Asian age reckoning starts newborns at "1", incrementing each Lunar New Year.

paragraph_text: Han Groo was born in Namyangju, Gyeonggi Province, South Korea. When she was in fourth grade, her family moved to the United States where she studied at Acacia Elementary School in California, and Ladera Vista Junior High School in California. Han Groo excelled at her academic studies—to the extent that she won a U.S. President's Education Award in 2003. She also had an extensive background in dancing since middle school, winning prizes at several competitions for hip hop dance, jazz dance and tap dance.

paragraph_text: Johannes "Hans" Schelling (October 27, 1954, Leiderdorp – May 20, 2008, Zoetermeer) was a sailor from the Netherlands, who represented his country at the 1988 Summer Olympics in Pusan. With Henry Koning as helmsman, Schelling took the 15th place in the Flying Dutchman.

paragraph_text: Even before Han's expansion into Central Asia, diplomat Zhang Qian's travels from 139 to 125 BC had established Chinese contacts with many surrounding civilizations. Zhang encountered Dayuan (Fergana), Kangju (Sogdiana), and Daxia (Bactria, formerly the Greco-Bactrian Kingdom); he also gathered information on Shendu (Indus River valley of North India) and Anxi (the Parthian Empire). All of these countries eventually received Han embassies. These connections marked the beginning of the Silk Road trade network that extended to the Roman Empire, bringing Han items like silk to Rome and Roman goods such as glasswares to China.

paragraph_text: This article deals with historic administrative divisions of Czechoslovakia up to 1992, when the country was split into the Czech Republic and Slovakia and the divisions were changed.

paragraph_text: Lieutenant Colonel Edward Akroyd (1810–1887), English manufacturer, was born into a textile manufacturing family in 1810, and when he died in 1887, he still owned the family firm. He inherited "James Akroyd & Sons Ltd." from his father in 1847, and he became the owner of one of the country's largest worsted manufacturers.

Question: When did the country where the Koksan is manufactured split from the country where Han Groo was born?
Answer: 1953