What do the colors of the french flag stand for?

Red, white and blue have come to represent liberty, equality and fraternity - the ideals of the French Revolution. Blue and red are also the time-honored colors of Paris, while white is the color of the Royal House of Bourbon.

Well, a and b together would be negative. b alone would also be negative.

The zhou dynasty (1046-256 bce) was the longest-lasting of china's dynasties. it followed the shang dynasty (c. 1600-1046 bce) and it finished when the army of the state of qin captured the city of chengzhou in 256 bce.