which of the following statements is true about the effect of the war?
a. trade between the south and europe increased greatly.
b. prices of goods rose in both the north and the south.
c. northern factories produced less and less.
d. the north’s economy was hurt more than the south’s economy

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".

2686-2181 bce-- "egyptian civilization developed along the nile river in large part because the river’s annual flooding ensured reliable, rich soil for growing crops."

1069-664 bce-- "ancient egyptians developed wide-reaching trade networks along the nile, in the red sea, and in the near east."