Explain why the vietnam war was part of the cold war?

Before world war 1 started, austria-hungry was wary of (spain or serbia) because of border disputes

What effect did ww11 have on empires that had been created by european nations

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 a. primary sources are historical documents, and secondary sources are modern-day documents.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.