The measure of the overall price level in an economy

Newspaper started by john campbell:

What does it signify if point 1 shifts down and to the right? a. the price level and the real gdp are falling. b. the real gdp is falling, and supply is increasing. c. the price level is rising, and production is increasing. d. the price level is falling, and demand and the real gdp are rising.

Why do you think that historians use the word “revolution” to describe important changes in agriculture? how did the green revolution and other agricultural revolutions change the lives of billions of people? < < read less