How did ghana's rulers patch traders passing through their kingdom

Ghana​ was the first of these empires, followed by the kingdoms of ​Mali​ and ​Songhai​. Kingdom of Ghana. As trade in gold and salt increased, Ghana's rulers gained power.

- "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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the u.s. department of labor is a cabinet-level federal agency that supports the american labor force. it has three overall functions. first, it protects the rights of workers and retirees. second, it provides job training. third, it provides statistics related to working, prices, and income.