Answer:C
Explanation: Because the Ginkgo Tree is native to china.
In 1859, a group of abolitionists attacked Harpers Ferry in Virginia because they wanted to arm enslaved workers using the town's armory.
The answer is option 3: A technique for making porcelain was perfected.
The art of making porcelain prospered in both periods. A lot of innovations were made in forms, glazes, decorative techniques methods of production and kiln technology.
During the Tang Dynasty, porcelain kilns were constructed all over the country and a type of vessel with molded decorations on it became very popular, which was made using an "upside down" and the coal was used as kiln fuel.
By the Song period, the manufacturing process was standardized (base-making, glazing, ingredient control, and temperature maintenance). In addition, the industry was divided into five types of kilns that had several features for glaze coloring and pattern design.
The correct answer here is B. that is the second option.
The conservation movement is a movement with the goal of protecting the nature, both flora and fauna and their habitats for the generations to come and enjoy. The conservation movement in contrasts to more traditional environmental movements mostly in the US seeks to protect nature but in order for it to be available for use sustainable use by the population. They are protecting the nature in order to keep using the natural resources.