Given a ≠ ± b and (a^2-b^2) / (a+b)=12 find a-b. (I will give brainliest for helpful answers. Please don't put a link in the answer box.)

Which of these played the biggest role in increased urbanization in the late 1800s? a) transportation improved b) the military was stronger c) no one was farming anymore d) steam power was discovered

Plz which of the following statements is the best definition of a blockade? a. a blockade is a group of soldiers recruited from a foreign country who serve for the money. b. a block it is a military tactic in which one army moves into place to face another army. c. a blockade is a wooden fence built to defend a colonial settlement. d. blockage is the shutting off of a port by ships to keep people or supplies from moving in or out.

Who was the leader of the democratic people’s republic at the beginning of the korean war?