The presence of many rivers and mountains protected china from invaders, and allowed their culture to grow with little outside influence.

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

the space race was a battle to make advanced technology to get to the moon and to get a better understanding of space.