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What was the response of relief organizations towards Mexican immigrants during the Great Depression?

What significant change does the protagonist experience in Looking Backward when he wakes up in the year 2000?

Which of the following best describes W.E.B. Du Bois’s approach to achieving racial equality?

How did the returning Black soldiers from World War I influence postwar racial dynamics in America?

How did the Ku Klux Klan expand its reach in the 1920s?

What are the two factors that influence surface currents ? 

What value is displayed for sum1?

Assume binary image BW1 shown is 200 (rows) by 300 (col) pixels. The white column is 10 pixels wide and extends from the top to the bottom of the image. Let  BW2 = BW1(100:200, 100:200) What is sum(sum(BW2)) ?

Assume binary image BW1 shown is 200 (rows) by 300 (col) pixels BW2 = BW1(:, 50:100) What is result of imshow(BW2)?  

Assume binary image BW1 shown is 200 (rows) by 300 (col) pixels BW2 = BW1(:, 100:200) What is result of imshow(BW2)?