The correct answer is Millions of people were killed despite very little European territory being gained or lost.
The best statement best summarizes the overall outcome of military conflict before the united states entered world war 1 is millions of people were killed despite very little European territory being gained or lost.
The Allies won the war that concluded in November 1918. Two million American soldiers served on the Western Front in Europe. More than 50,000 U.S. soldiers died.
Other war consequences in the U.S. were, inflation was high, companies began to reduce wages, some corporations lay off workers. There were too many Union strikes. The fear of communism spread throughout the country, crime rates increased as well as corruption in politics.
The Continental Congress adopted the Articles of Confederation, the first constitution of the United States, on November 15, 1777
The Second World War was a political and military conflict on a global scale that took place between 1939 and 1945, in which most of the countries of the world were involved and which represents one of the most traumatic and significant historical and cultural milestones of the century. XX, given the state of Total War (absolute economic, social and military commitment of nations) assumed by the two sides involved.
The conflict cost the lives of between 50 and 70 million people, both civilian and military, of which 26 million belonged to the USSR (and only 9 million were military). Particular case are the millions of people executed in concentration and extermination camps, subjected to subhuman conditions of existence or even to medical and chemical experiments, such as the almost 6 million Jews systematically exterminated by the German National Socialist regime. The latter was called the Holocaust.
To this must be added the numerous deaths that the economic consequences of the conflict caused worldwide, such as the famine in Bengal that claimed the lives of almost 4 million Indians, and which are often ignored by the official history of the conflict, whose total balance of deaths may be around 100 million people.
Its population has increased