The American Revolution's connection to "liberty" was important on a global scale, since this inspired many other nations, including France, to start revolutions in order to throw off tyranny.
Disease and plague brought to rome killed 10 percent of the population
(2y+1)*7 = (3y-5)*7; distribute
14y+7=21y-35; move 14y to the other side, 7=21y-14y-35, combine like terms; 7=7y-35; move 35 to the other side; 35+7=7y; add 35 and 7; 42=7y. Divide 7 by 42,
y=6
I hope you understand this clearly!
Because of climate change and drought wich caused the fall of the mongol empire thats also how it change over time