Which of the following was not an advancement created during the Han dynasty? A. the design of new water clocks and sun dials
B. the invention of paper
C. the creation of a new kind of seismograph
D. the creation of China's first system of writing

In 1914, alabama produced 1.7 million bales of cotton, but three years later produced only 515,000, bales. meanwhile, in georgia, 5.2 million acres of land was dedicated for cotton production in 1914, but by 1923 there were just 2.6 million acres used for growing cotton. all of this was the result of the work of a tiny insect: the boll weevil. alabama and georgia first felt the effects of the boll weevil at different times. what would account for this difference in timing?