Final answer:
The development of the machine gun enabled swift conquest of territories and prevented encounters with local populations, impacting European imperialism.
Step-by-step explanation:
The development of the machine gun had a significant impact on European imperialism. It enabled swift conquest of territories, as the machine gun provided European powers with a superior firepower advantage. This allowed them to quickly overpower local populations and assert their control. The machine gun also prevented encounters with local populations, as its firepower made it difficult for resistance to arise.
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