What were some of the peacekeeping measures that were taken after each conflict to prevent future wars?
How successful were these measures? Do you think another world war could ever take
place again? Why or why not?
Help pls it would mean a lot !!

What is the main difference between primary and secondary sources? a. primary sources are historical documents, and secondary sources are modern-day documents. b. primary sources are derived from museums and archives, and secondary sources are created by history students and academics. c. primary sources are found in ancient places with a rich history, and secondary sources are found in historical journals and blogs. d. primary sources are created during a particular historical era, and secondary sources are created by studying primary sources.