China

The 1st book in history to provide the formula to gunpowder dates back to 1044 AD under the Song dynasty in China

The 1st book in history to provide the formula to gunpowder dates back to 1044 AD under the Song dynasty in China

California is the fifth largest economy in the world, only surpassed by the total GDP of the United States, China, Japan, and Germany,

California is the fifth largest economy in the world, only surpassed by the total GDP of the United States, China, Japan, and Germany,