Question: What is the name of the social movement depicted in Jacob Lawrence's paintings that involved millions of African-Americans moving out of the rural Southern United States?

full_context: Document 1: The Chicago Defender: The Chicago Defender is a Chicago-based weekly newspaper founded in 1905 by Robert S. Abbott for primarily African-American readers. Historically, "The Defender" is considered the "most important" paper of what was then known as the colored or negro press. Abbott's newspaper reported and campaigned against Jim Crow era violence and urged blacks in the American South to come north in what became the Great Migration. Under his nephew and chosen successor, John H. Sengstacke, the paper took on segregation, especially in the U.S. military, during World War II.
Document 2: Harlem Renaissance: The Harlem Renaissance was a cultural, social, and artistic explosion that took place in Harlem, New York, spanning the 1920s. During the time, it was known as the "New Negro Movement", named after the 1925 anthology by Alain Locke. The Movement also included the new African-American cultural expressions across the urban areas in the Northeast and Midwest United States affected by the African-American Great Migration, of which Harlem was the largest. The Harlem Renaissance was considered to be a rebirth of African-American arts. Though it was centered in the Harlem neighborhood of the borough of Manhattan in New York City, many francophone black writers from African and Caribbean colonies who lived in Paris were also influenced by the Harlem Renaissance.
Document 3: Migration Series: The Migration Series, originally titled The Migration of the Negro, is a group of paintings by African-American painter Jacob Lawrence which depicts the migration of African Americans to the northern United States from the South that began in the 1910s. It was published in 1941 and funded by the WPA.
Document 4: Chicago Black Renaissance: The Chicago Black Renaissance (also known as the Black Chicago Renaissance) was a creative movement that blossomed out of the Chicago Black Belt on the city's South Side and spanned the 1930s and 1940s before a transformation in art and culture in the mid-1950s through the turn of the century. The movement included such famous African-American writers as Richard Wright, Margaret Walker, Gwendolyn Brooks, Arna Bontemps, and Lorraine Hansberry, as well as musicians Thomas A. Dorsey, Louis Armstrong, and Earl Hines. During the Great Migration, which brought tens of thousands of African-Americans to Chicago's South Side, African-American writers, artists, and community leaders began promoting racial pride and a new black consciousness, similar to that of the Harlem Renaissance in New York City. Unlike the Harlem Renaissance, the Chicago Black Renaissance did not receive the same amount of publicity on a national setting. This was due to several factors, including the lower profile participants in the movement, the lack of wealthy patrons investing in the movement, and a geographical distance from New York as a publishing center.
Document 5: List of first African-American mayors: In the 19th century in the American South during Reconstruction, African Americans began to be elected to many local offices, such as sheriff or Justice of the Peace, and some became the first African-American mayors of cities and towns. After this brief period, African Americans found themselves unable to obtain mayoral offices due to racial discrimination. In the 1960s, they again began to be elected or appointed to mayoral positions following the achievements of the civil rights movement and passage of the Civil Rights Act of 1964 and Voting Rights Act of 1965. Achievements in African Americans' being elected mayor in majority-European American and other municipalities made their political participation one of daily life in many localities.
Document 6: Chicago blues: The Chicago blues is a form of blues music indigenous to Chicago, Illinois. Chicago blues is an electric blues style of urban blues. Urban blues evolved from classic blues following the Great Migration, or the Great Northern Drive, which was both forced and voluntary at times, of African Americans from the southern United States to the industrial cities of the north, such as Chicago. Muddy Waters directly joined that migration, like many others, such as in Florida, avoiding the more harshly southern Jim Crow laws. Bruce Iglauer, founder of Alligator Records stated that, "Chicago blues is the music of the industrial city, and has an industrial sense about it." Additionally, recognizing the shift in blues, Chicago blues singer and guitarist Kevin Moore expressed the blues transition stating, "You have to put some new life into it, new blood, new perspectives. You can't keep talking about mules, workin' on the levee."
Document 7: Great Migration Study Project: The Great Migration Study Project is an ongoing scholarly endeavor to catalogue all emigrants to colonial New England between 1620 and 1640 (the Puritan great migration). Directed by Robert Charles Anderson, it is done in collaboration with the New England Historic Genealogical Society.
Document 8: Gentrification of Atlanta: The gentrification of Atlanta has been the source of both praise and condemnation. Gentrification of Atlanta's inner-city neighborhoods began in the 1970s, and it has continued, at varying levels of intensity, into the present. Many factors have contributed to the city's gentrification. A major increase in gentrification that occurred in the last years of the twentieth century has been attributed to the 1996 Summer Olympics. However, during the 2000s, Atlanta underwent a profound transformation demographically, physically, and culturally. Suburbanization, rising prices, a booming economy, and new migrants decreased the city’s black percentage from a high of 67% in 1990 to 54% in 2010. From 2000 to 2010, Atlanta gained 22,763 white residents, 5,142 Asian residents, and 3,095 Hispanic residents, while the city’s black population decreased by 31,678. Much of the city’s demographic change during the decade was driven by young, college-educated professionals: from 2000 to 2009, the three-mile radius surrounding Downtown Atlanta gained 9,722 residents aged 25 to 34 holding at least a four-year degree, an increase of 61%. Between the mid-1990s and 2010, stimulated by funding from the HOPE VI program, Atlanta demolished nearly all of its public housing, a total of 17,000 units and about 10% of all housing units in the city. In 2005, the $2.8 billion BeltLine project was adopted, with the stated goals of converting a disused 22-mile freight railroad loop that surrounds the central city into an art-filled multi-use trail and increasing the city’s park space by 40%. Lastly, Atlanta’s cultural offerings expanded during the 2000s: the High Museum of Art doubled in size; the Alliance Theatre won a Tony Award; and numerous art galleries were established on the once-industrial Westside.
Document 9: Regionalism (art): American Regionalism is an American realist modern art movement that included paintings, murals, lithographs, and illustrations depicting realistic scenes of rural and small-town America primarily in the Midwest and Deep South. It arose in the 1930s as a response to the Great Depression, and ended in the 1940s due to the end of World War II and a lack of development within the movement. It reached its height of popularity from 1930 to 1935, as it was widely appreciated for its reassuring images of the American heartland during the Great Depression. Despite major stylistic differences between specific artists, Regionalist art in general was in a relatively conservative and traditionalist style that appealed to popular American sensibilities, while strictly opposing the perceived domination of French art.
Document 10: The Problem We All Live With: The Problem We All Live With is a 1964 painting by Norman Rockwell. It is considered an iconic image of the Civil Rights Movement in the United States. It depicts Ruby Bridges, a six-year-old African American girl, on her way to William Frantz Elementary School, an all-white public school, on November 14, 1960, during the New Orleans school desegregation crisis. Because of threats and violence against her, she is escorted by four deputy U.S. marshals; the painting is framed such that the marshals' heads are cropped at the shoulders. On the wall behind her is written the racial slur "nigger" and the letters "KKK"; a smashed and splattered tomato thrown against the wall is also visible. The white protesters are not visible, as the viewer is looking at the scene from their point of view. The painting is oil on canvas and measures 36 in high by 58 in wide.
Document 11: Great Migration (African American): The Great Migration was the movement of 6 million African-Americans out of the rural Southern United States to the urban Northeast, Midwest, and West that occurred between 1916 and 1970. Until 1910, more than 90 percent of the African-American population lived in the American South. In 1900, only one-fifth of African-Americans living in the South were living in urban areas. By the end of the Great Migration, 53 percent of the African-American population remained in the South, while 40 percent lived in the North, and 7 percent in the West, and the African-American population had become highly urbanized. By 1970, more than 80 percent of African-Americans lived in cities, and by 1960, of those African-Americans still living in the South, half now lived in urban areas. In 1991, Nicholas Lemann wrote that the Great Migration:
Document 12: Depopulation of the Great Plains: The depopulation of the Great Plains refers to the large-scale migration of people from rural areas of the Great Plains of the United States to more urban areas and to the east and west coasts during the 20th century. This phenomenon of rural-to-urban migration has occurred to some degree in most areas of the United States, but has been especially pronounced in the Great Plains states, including Texas, Oklahoma, Kansas, Nebraska, South Dakota, North Dakota, Montana, Wyoming, Colorado, and New Mexico where many counties have lost more than 60 percent of their former populations.
Document 13: Black Southerners: Black Southerners are African-Americans living in the Southern United States, the region that has the largest population of African-Americans in the United States.
Document 14: The Talented Tenth: The Talented Tenth is a term that designated a leadership class of African Americans in the early 20th century. The term was created by Northern philanthropists, then publicized by W. E. B. Du Bois in an influential essay of the same name, which he published in September 1903. It appeared in "The Negro Problem", a collection of essays written by leading African Americans.
Document 15: African-American literature: African-American literature is the body of literature produced in the United States by writers of African descent. It begins with the works of such late 18th-century writers as Phillis Wheatley. Before the high point of slave narratives, African-American literature was dominated by autobiographical spiritual narratives. The genre known as slave narratives in the 19th century were accounts by people who had generally escaped from slavery, about their journeys to freedom and ways they claimed their lives. The Harlem Renaissance of the 1920s was a great period of flowering in literature and the arts, influenced both by writers who came North in the Great Migration and those who were immigrants from Jamaica and other Caribbean islands. African-American writers have been recognized by the highest awards, including the Nobel Prize to Toni Morrison. Among the themes and issues explored in this literature are the role of African Americans within the larger American society, African-American culture, racism, slavery, and social equality. African-American writing has tended to incorporate oral forms, such as spirituals, sermons, gospel music, blues, or rap.
ground_truth: The Great Migration