Which of the following statements is true? choose one: a. bronze was used as early as 4000 b. c.e. to replace less-desirable iron tools. b. bronze is harder than copper, so it retains a cutting edge sharper than that of copper. c. bronze is an alloy of copper and chromium. d. copper is not easily smelted, because extremely high temperature is required.

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".

d. migration of french settlers into english colonies

if the government does something the people dont like i tihnk threre would be a revolt