I believe that the best answer among the choices provided by the question is the last choice 4. the cotton gin<span> </span>
Hope my answer would be a great help for you. If you have more questions feel free to ask here at Brainly.
Chamberlain appeasement policy bought a valuable year to Britain to get ready for the war which was bond to come. Plus he didn't want to follow Hitler's orders.
Hope this helped :)
Have a great day
Answer:
What is the best summary of the first paragraph of "How We Entered World War I"? <em><u>The United States was not considered a great power until it entered World War I, thus beginning its continual involvement in world affairs.</u></em>
