How did the united states contribute to the allied victory? check all that apply.

a. by providing large numbers of reinforcements

b. by supporting the last major allied offensive

c. by boosting the morale of allied troops

it's all of them

Explanation:

that's the answer on edge

explanation:

an oligopoly is a term used to clarify the structure of a particular market, industry, or organization. a market is considered oligopolistic or amazingly focused when it is shared between a few companies.