Which invention significantly enhanced the efficiency of silk production in ancient China? Seismograph Abacus Gunpowder Silk Reeling Machine None Which invention facilitated the rapid expansion of trade and commerce in ancient China? Spinning wheel Pottery Abacus Compass None What explosive substance was discovered accidentally by alchemists in ancient China? Silk Gunpowder Porcelain Tea None Which invention enabled the mass production of written materials in ancient China? Printing Kite Umbrella Fan None What ancient Chinese invention revolutionized the dissemination of knowledge? Abacus Compass Paper Wheelbarrow None Time's up
