Please help im timed and need to get my grade up! What pair of Chinese developments had the most impact on increasing trade?

o the magnetic compass and paper
o acupuncture and the Silk Road
o bronze vessels and calligraphy
o the iron plow and the Great Wall

the cost of college has risen faster than inflation for many years.

the high price of student services and administration are two reasons for the rapid increase in cost.

this isn't a question and if you're going to list things be kind and use commas.

answer; ///i believe that the correct answer is ; hieroglyphs or glyphs; the maya script, also known as maya glyphs, was the writing system of the maya civilization of mesoamerica; as always plz check first..good luck

an economic reason that the south needed a reconstruction plan is that plantations, factories, and other businesses were destroyed during the war.