In his painting virgin and child enthroned c.1310, giotto, nicknamed the "the father of renaissance painting," employed which technique to give the illusion of believable space?

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The theme of social protest remained a consistent focus for jacob lawrence throughout his career. in the 1960s lawrence was inspired by news reports and photographs, including images of segregated lunch counter sit-ins and stories of the   freedom riders in the civil rights movement. from the 1970s onward, lawrence's work focused less explicitly on contemporary social issues.