By 1970, LAFTA expanded to include four more Latin American nations: Bolivia, Colombia, Ecuador, and Venezuela.

By 1974, another challenge to the state's authority and legitimacy had come from 19 April Movement ( M-19 ), a mostly urban guerrilla group founded allegedly in response to an electoral fraud during the final National Front election of Misael Pastrana ( 1970 – 1974 ) and the defeat of former dictator Gustavo Rojas.

By 1970, they had tentatively identified more than 50.

By 1970, a calculator could be made using just a few chips of low power consumption, allowing portable models powered from rechargeable batteries.

By using doublespeak in advertisements, aspirin production rose by almost 50 percent from over 23 million pounds in 1960 to over 35 million pounds in 1970.

By 1970, both Parton and Wagoner had grown frustrated by her lack of solo chart success, and Porter had her record Jimmie Rodgers ' " Mule Skinner Blues ", a gimmick that worked.

By 1970 the national census registered 8. 5 million people, about a 27 percent increase, while the most recent official census in 1984 recorded a figure of 12. 3 million — almost double the 1960 figure ( see table 2, Appendix ).

By 1970 several different techniques had been shown to perform well on small text corpora such as the Cranfield collection ( several thousand documents ).

By 1970, kickboxing was telecast in Japan on three different channels three times weekly.

By January 1970, Zambia had acquired majority holding in the Zambian operations of the two major foreign mining interests, the Anglo American Corporation and the Rhodesia Selection Trust ( RST ); the two became the Nchanga Consolidated Copper Mines ( NCCM ) and Roan Consolidated Mines ( RCM ), respectively.

By 1970, the city had a total area of approximately, more than five times its size in 1940.

By the 1970s some Native American film roles began to show more complexity, such as those in Little Big Man ( 1970 ), Billy Jack ( 1971 ), and The Outlaw Josey Wales ( 1976 ), which depicted Native Americans in minor supporting roles.

By 1970 automatic switching facilities were in use in Pyongyang, Sinŭiju, Hamhŭng, and Hyesan.

By 1970, Dot had become an all-country label and in 1974, Paramount sold all of its record holdings to ABC Records, which in turn was sold to MCA ( now Universal Music Group ) in 1979.

By 1970, New Left proponents had adopted the term political correctness.

By 1970, the latifundio type of industrial farm ( more than 50 hectares in area ) occupied more than 77 per cent of arable land in the country.

By 1968 all forms of segregation had been declared unconstitutional by the Supreme Court, and by 1970 support for formal legal segregation had dissolved.

By 1970, Stanford was home to a linear accelerator, and was one of the original four ARPANET nodes ( precursor to the internet ).

By 1970 Macainsh was back with Strauks, now on drums, first in Claptrap and by 1971 in Frame which had Graeme " Shirley " Strachan as lead vocalist.

By 1970 the DGI had managed to train hundreds of Sandinista guerrilla leaders and had vast influence over the organization.

By the 1960s, tracks of 333. 3m length were commonly used for international competitions ( eg: the Agustín Melgar Olympic Velodrome used for track cycling events at the 1968 Summer Olympics, and Leicester's Saffron Lane velodrome used at the 1970 and 1982 Track Cycling World Championships ).

By January 1970, Zambia had acquired majority holding in the Zambian operations of the two major foreign mining corporations, the Anglo American Corporation and the Rhodesia Selection Trust ( RST ); the two became the Nchanga Consolidated Copper Mines ( NCCM ) and Roan Consolidated Mines ( RCM ), respectively.

By the 2000s, Rap and Hip Hop had reached their commercial peaks, and the genre continued to dominate the music scene of the decade The best-selling artist of the decade was the American rapper Eminem, who sold 32 million albums, followed by The Beatles ( who split in 1970 but have stayed extremely popular since ).

By the end of 1970 there were more than 200 Sheridans in Vietnam, and they stayed in the field until the last US Armored Cavalry unit, the 1st Squadron, 1st Armored Cavalry prepared for re-deployment back to the United States on 10 April 1972.

By 1970, President Richard Nixon initiated a Plan of Vietnamization, which would remove the US from the Vietnam War and return the responsibility of defense back to the South Vietnamese.

By the end of the operation, 3 million tons of bombs are dropped on Laos, slowing but not seriously disrupting trail operations.

By 1836, when the first migrant wagon train was organized in Independence, Missouri, a wagon trail had been cleared to Fort Hall, Idaho.

By 1913, a hydraulic plant had been installed at Marvel Creek and in 1914 construction of a cat trail began starting south of Aniak on the mouth of the Aniak Slough and proceeding to the diggings at Marvel Creek.

By April 1871 the mule trail and post were both completed and General Stoneman planned on making Camp Pinal his headquarters, but the project was abandoned after General George Crook replaced General Stoneman because of the Camp Grant Massacre of April 1871.

By August of that year General Crook abandoned the post, and only the mule trail was left to indicate the intended ambitious presence of U. S. soldiers.

Portions of the movie Stand By Me were filmed along the railroad tracks east of Cottage Grove, which are now the Row River National Recreation Trail, a bicycle and walking trail.

By 1973, trucks could drive the entire length of the trail without emerging from the canopy except to ford streams or cross them on crude bridges built beneath the water's surface.

By tracing the decision making trail backwards, they are able to show a philosopher his influence on the Starways Congress.

By this time, the footpaths on the trail had been enlarged to truck roads, with smaller paths for bicycles and walking.

By 1 May this army was threatening the garrisons that Charles had left in a trail down Italy to guard his communications with France.

By 1836, when the first migrant wagon train was organized in Independence, Missouri, a wagon trail had been cleared to Fort Hall, Idaho.

By about 1832, the fur traders had improved the trail along the Platte, North Platte, and Sweetwater rivers to a rough wagon trail from the Missouri River to the Green River in Wyoming, where most of the Rocky Mountain Rendezvous were held.

By 1809, the trail was fully navigable by wagon.

By about 1832 the trail along the Platte, North Platte, and Sweetwater Rivers had been improved by the fur traders to a rough wagon trail from the Missouri River to the Green River in Wyoming where most of the Rocky Mountain Rendezvous occurred.

By 1843 the Sweetwater River valley was a regular wagon trail providing the water, grass and fuel needed on the Oregon, California and Mormon Trails across Wyoming.

By heading south on North Lynn Street, one can cross over U. S. Route 50 and travel through the grounds of the Marine Corps War Memorial to reach a paved trail that travels along the wall of Arlington National Cemetery to Memorial Drive.

By the end of the year the Americans felt that they were better prepared to deliver destruction to the trail system.

By the time of his 1922 expedition to Africa, Boyce was so well respected in Scouting that French Boy Scouts in Algeria saluted him and offered to escort him along a trail when they found out he was the founder of BSA and LSA in America.

By the early 1840s the trail along the river was being used by settlers going west to California.

By speeding up Morse code using an audio tape recorder ( this is an obsolete method ), or using a computer and digital modes such as JT6M or FSK441, very short high speed bursts of digital data can be bounced off the ionized gas trail of meteor showers.

By 1989, the trail stretched, with its northern terminus at Morrow.