Answer: B C E
Explanation: trust me i got it right
Made killing at a distance more effiecient
Also it made arming, cothing and feeding soldiers cheaper than training them. So now young boys were recruited, armed, hopelessly undertrained and thrown into trench to die, hopefuly killing some opposing soldiers before that. It made soldiers a resource to be expended.
Answer:
They are more accurate and are untampered, as secondary sources may be rumors, influenced, or otherwise messed with.
