Answer:
D. His improvements allowed the steam engine to run more efficiently on oil instead of coal.
The League of Nations was formed to unify many countries. It wasn't very efficient. The United Nations was essentially an improved version of the League of Nations.
The main reason why we know more about Hammurabi's Code than other early forms of law is because Hammurabi's Code was the first (or at least one of the first) codes of law to be permanently inscribed on stone instead of issued on paper or through word of mouth.
Answer:
Get more into real life situations. For example something that will make this decade more interested. Instead of something for 1875 that everyone will get bored of.
Explanation: