heavy Gustav German super weapon

How many men were required in total to both assemble the weapon and operate it

whats the name of the iconic German manufacturing company tasked with the construction?

• cop

• qwon

• krupp

• kraft

Heavy Gustav weighs ​ (a)   rolls on ​ (b)   and measures almost ​ (c)  

• 1,3540
• 40 axels
• 50 metres
• 2,5000
• 30 axels
• 70 metres

Why was heavy Gustav such a pain to operate? give 2 reasons

Was heavy Gustav a successful or unsuccessful weapon? Explain your answer using facts from the video.