What were some of the negative effects of technological advancement from world war 1?

According to ncpedia.org, Perhaps the most significant technological advance during World War I was the improvement of the machine gun, a weapon originally developed by an American, Hiram Maxim. They also developed air-cooled machine guns for airplanes and improved those used on the ground, making them lighter and easier to move.

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yes.

explanation:

because it let the japanese know who had the upper hand in the war.

2. a land bridge connected asia and north america thousands of years ago.

4. crossing the land bridge would have been simple for the first migrants.

5. people might have crossed a land bridge while hunting animals.