Correct answer:
<h2>A. The Declaration of Independence established a new country, while the Declaration of the Rights of Man and of the Citizen only lists a set of principles.</h2>
America's <em>Declaration of Independence </em>was establishing the new country's break from Great Britain. In France a little more than a decade later, the <em>Declaration of the Rights of Man and of the Citizen </em>was a statement of principles as representatives of the people were seeking to reform government under the French monarchy.
Additional historical note:
Your question asked about a difference between the documents. There are also key similarities. One important similarity is that both declarations emphasize that persons have natural rights that are to be preserved and protected. The Scientific Revolution had shown that there are natural laws in place in the physical world and in the universe at large. Applying similar principles to matters like government and society, Enlightenment thinkers believed that using reason will guide us to the best ways to operate politically so we can create the most beneficial conditions for society. The declarations at the heart of the American Revolution and French Revolution both emphasized the natural rights of people.
Answer:

it is a molecule consisting of four atoms
Answer:
Revelations that spies in the US atomic program had passed secrets to the Soviet Union set off a nationwide panic that communist spies might be infiltrating many American institutions.
When it came to light that Soviet spies in the US atomic program had passed secrets to Russia, Americans began to worry that spies might be lurking in every corner of society. In the late 1940s and early 1950s, there were several highly-publicized espionage trials that convicted leading scientists and government figures of espionage, culminating in the 1953 execution of scientist Julius Rosenberg and his wife Ethel for passing information about the atomic bomb to Russia. These convictions served to justify fears that spies could be active throughout the country.