How do we know what we know about the past

Which options describe accomplishments in the life of wernher von braun? (select all that apply.) a. braun the americans compete with the ussr in the space race. b. braun established the national aeronautics and space administration. c. braun worked as the technical adviser of space films for disney studios. d. braun designed the special effects for japanese science-fiction movies. e. braun directed the v-2 missile development for germany’s wehrmacht.