Why did the articles of confederation didn’t include a national court system

Under the Articles, the states, not Congress, had the power to tax. Congress could raise money only by asking the states for funds, borrowing from foreign governments, or selling western lands. ... The Articles of Confederation created a very weak central government.

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in 1897, pershing became a tactical officer at west point, and that's where he was given the nickname "black jack." pershing's first name is "john," for which "jack" is a nickname, and he was a white man who commanded black troops. hence "black jack".