The answer to your question is D.
Answer:
The Missouri Plan (originally the Missouri Nonpartisan Court Plan, also known as the merit plan, or some variation) is a method for the selection of judges. It originated in Missouri in 1940 and has been adopted by many states of the United States. Similar methods are used in some other countries.
Explanation:
I believe the answer is: oil and electricity
The Open Door Policy is a term in foreign affairs initially used to refer to the United States policy established in the late 19th century and the early 20th century, as enunciated in Secretary of State John Hay's Open Door Note, dated September 6, 1899 and dispatched to the major European powers.[1] The policy proposed to keep China open to trade with all countries on an equal basis, keeping any one power from total control of the country, and calling upon all powers, within their spheres
