Another feature of the population was the number of Spanish-born colonists, known as peninsulares, who were mostly adult males ; they constituted between ten and twenty per cent of the population between the middle of the 19th century and the great depression of the 1930s.

After a number of notable successes and some early failures in the 1920s, the League ultimately proved incapable of preventing aggression by the Axis powers in the 1930s.

Ultimately, efforts to curb the unconstrained growth of tourist courts were futile as motor courts ( as motels were called in the 1930s and 1940s ) grew in number and popularity.

Initially a supporter of Joseph Stalin after Vladimir Lenin's death, he came to oppose a large number of Stalin's policies and was one of Stalin's most prominent victims during the " Moscow Trials " and purges of the Old Bolsheviks in the late 1930s.

* In movies of the late 1920s and early 1930s, the number of stars encircling the mountain sometimes varied.

During the 1930s and 1940s, Heinlein was deeply interested in Alfred Korzybski's General Semantics and attended a number of seminars on the subject.

It is based on research into long-term memory, and is a practical application of the spaced repetition learning method that has been proposed for efficient instruction by a number of psychologists as early as in the 1930s.

The success ( or at least the controversy ) of Dalí and Buñuel's film L ' Age d ' Or in December 1930 had a regenerative effect, drawing a number of new recruits, and encouraging countless new artistic works the following year and throughout the 1930s.

By the 1930s, improvements in vacuum tube technology rapidly eroded the TRF receiver's cost advantages, and the explosion in the number of broadcasting stations created a demand for cheaper, higher-performance receivers.

The university became a favored choice for bright Jewish students from New York in the 1920s and 1930s when the Ivy League schools had quotas restricting the number of Jews to be admitted.

Statistical techniques began in the 18th century, when Buffon's needle was proposed as a way to approximate the number π. Fermi used them in the 1930s, and when he heard of Ulam's breakthrough, created the FERMIAC, which performs a mechanical simulation of random diffusion of neutrons.

Jansson displayed a number of artworks in exhibitions during the 1930s and early 1940s, and her first solo exhibition was held in 1943.

The Princeton Mathematics Community in the 1930s: An Oral-History Project, transcript number 5.

During the 1930s, he moved between a number of studios and became known for his meticulous work.

The 1987-91 drought was especially notable as in the 1930s for the large number of rain of mud events, often generated by dust in suspension and / or carried on upper-level winds.

A number of motion pictures in the 1930s, some of them even starring Wallace Beery, repeated the basic story about a man surrendering to drink and redeemed by the love of his long-suffering son.

The number of hobos increased greatly during the Great Depression era of the 1930s.

During the 1930s there were a small number of experimental ( known as " Apex ") stations attempting to broadcast high fidelity audio using wide-bandwidth AM on VHF frequencies.

During the 1930s a number of light aircraft used single acting controls but used springs to return the ailerons to their neutral positions when the stick was released.

This was the first film in which MGM recorded at least part of the soundtrack in stereophonic sound, a practice which was used for a number of MGM musical comedies beginning the late 1930s.

During the late 1920s and early 1930s, Pan Am purchased a number of ailing or defunct airlines in Central and South America and negotiated with postal officials to win most of the government's airmail contracts to the region.

During the 1930s, she appeared in a large number of plays in London's West End, playing roles such as Ophelia, opposite John Gielgud's legendary Hamlet, and Katherine, opposite Laurence Olivier's Henry V. In the 1930s, she also worked in a couple of British films.

In the late 1930s and 40s, British County Court judge Arthur Alexander Gordon Clark ( 1900 – 1958 ) published a number of detective novels under the alias Cyril Hare in which he made use of his profoundly extensive knowledge of the English legal system.

A number of famous trains have been associated with King's Cross, such as the Flying Scotsman service to Edinburgh, and the Gresley A3 and later streamlined A4 Pacific steam locomotives, which handled express services from the 1930s until the early 1960s.

In North America, during the 1930s and 1940s, the Library of Congress worked through the offices of traditional music collectors Robert Winslow Gordon, Alan Lomax and others to capture as much North American field material as possible.

His first major published work was in 1911, Cowboy Songs and Other Frontier Ballads, and was arguably the most prominent US folk music scholar of his time, notably during the beginnings of the folk music revival in the 1930s and early 1940s.

In the United Kingdom, film adaptations of stage farces were popular in the early 1930s, while the music hall tradition strongly influenced film comedy into the 1940s with Will Hay and George Formby among the top comedy stars of the time.

Although Latin Jazz is most popularly associated with artists from the Caribbean ( particularly Cuba ) and Brazil, young Mexican Americans have played a role in its development over the years, going back to the 1930s and early 1940s, the era of the zoot suit, when young Mexican American musicians in Los Angeles and San Jose began to experiment with banda, a Jazz-like Mexican music that has grown recently in popularity among Mexican Americans such as Jenni Rivera.

The song had been inspired by Joel Dorn ’ s son and reflected McLean ’ s interest in 1930s music.

In North America, during the 1930s and 1940s, the Library of Congress worked through the offices of traditional music collectors Robert Winslow Gordon, Alan Lomax and others to capture as much North American field material as possible.

and was arguably the most prominent US folk music scholar of his time, notably during the beginnings of the folk music revival in the 1930s and early 1940s.

Prior to the 1930s, larger scale themes and linkages between were mostly drawn by folk music scholars and collectors.

The 1930s saw the beginnings of larger scale themes, commonalities, themes and linkages in folk music developing in the populace and practitioners as well, often related to the great depression.

Much of the folk music growth in the 1930s was in the area of live performance, particularly in folk festivals that began during the 1930s.

The American folk music revivalists of the 1930s approached folk music in different ways.

Despite the revivalists ' various political views and different opinions regarding the nature of authentic folk music, they all shared an understanding of Americanism that grounded the nation's identity in cultural pluralism and political democracy " By the end of the 1930s they along with the musicians and others had turned American folk music into a social movement.

Radio shows of the 1930s and 1940s used the Hammond for not only mood music but more significantly, for sound effects.

The harmonica's versatility brought it to the attention of classical music during the 1930s.

Harmonica music started to develop in Hong Kong in the 1930s.

As the music has developed and spread around the world it has drawn on many different national, regional and local musical cultures giving rise, since its early 20th century American beginnings, to many distinctive styles: New Orleans jazz dating from the early 1910s, big band swing, Kansas City jazz and Gypsy jazz from the 1930s and 1940s, bebop from the mid-1940s and on down through West Coast jazz, cool jazz, avant-garde jazz, Afro-Cuban jazz, modal jazz, free jazz, Latin jazz in various forms, soul jazz, jazz fusion and jazz rock, smooth jazz, jazz-funk, punk jazz, acid jazz, ethno jazz, jazz rap, cyber jazz, Indo jazz, M-Base, nu jazz, urban jazz and other ways of playing the music.

By the 1930s, the guitar began to displace the banjo as the primary chordal rhythm instrument in jazz music, because the guitar could be used to voice chords of greater harmonic complexity, and it had a somewhat more muted tone that blended well with the upright bass, which, by this time, had almost completely replaced the tuba as the dominant bass instrument in jazz music.

During the late 1930s and through the 1940s — the heyday of big band jazz and swing music — the guitar was an important rhythm section instrument.