Which statement best describes the idea of collective security?

"An attack on one is considered an attack on all."

Explanation:

Given that Collective Security is a term that describes a situation whereby individuals, group of people, state or countries comes together to form decision concerning security which ensures and agreed on the basis that the security of one is the interest of all, and therefore commits to a collective response to threats to and breaches to peace.

Hence, in this case, the correct answer is "An attack on one is considered an attack on all."

Money was invested in early American industry by businessmen from New England. The correct option among all the options that are given in the question is the second option. The progress in industrialization did not stop, but it progressed with time. I hope the answer comes to your help.