Answer:
China was unified by the Tang Dynasty
Answer:
The Columbian exchange, also known as the Columbian interchange, named after Christopher Columbus, was the widespread transfer of plants, animals, culture, human populations, technology, diseases, and ideas between the Americas, West Africa, and the Old World in the 15th and 16th centuries. Christopher Columbus introduced horses, sugar plants, and disease to the New World, while facilitating the introduction of New World commodities like sugar, tobacco, chocolate, and potatoes to the Old World.
Answer:
Dalton's atomic theory presented four main principles:
1) All atoms in an element are uniform.
2) Atoms are indivisible.
3) Atoms combine in whole numbers.
4) Chemical reactions combine or divide elements without loss of matter.
Explanation:
"the best predictor of the future is the past" Mark Twain
the United States during the start of the war took an isolationist outlook on the world and it took the bombing of Pearl Harbor to break that outlook. Also the war showed the failure of the league of nations and the policies it stood for. The war showed failure in all nations that needed to be changed and still to this day needs to be changed
