What made WWI so brutal?

Poison gas, machine guns, artillery bombardment, submarines air planes etc. were weapons of war that caused enormous damage. Some of them - e.g. artillery existed - long time but modern technologies made it much more destructive. Paradoxically the level of technology was also lacking in some ways.  

Explanation: Can you make me Brainlest if i get right?

The Supreme Court is the head of the judicial branch. Unlike a criminal court, the Supreme Court rules whether something is constitutional or unconstitutional—whether or not it is permitted under the Constitution. On the Supreme Court there are nine justices, or judges: eight associate justices and one chief justice. hope this helps love :)

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