(60 Points) I NEED THIS ASAP
What does the northward migration of African Americans in the early 20th century have in common with other migrations within and into the United States – Westward Expansion, immigration of Europeans, groups of refugees from Southeast Asia in the 70s, and from Latin American and the Middle East today?

describe a little more.

- "schenck v. united states, case in which the u.s. supreme court ruled on march 3, 1919, that the freedom of speech protection afforded in the u.s. constitution's first amendment could be restricted if the words spoken or printed represented to society a “clear and present danger.” "

- speech aimed to potentially create danger could be banned.

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