Yes
Of course not!
Not sure what you mean...I believe Afghanistan and Iraq currently require machine guns...as well as Georgia...
Highly doubtful any actually succeeded.
Probably about the same as any other country's machine guns in any wars they've won. We weren't the first to have them - by the time we employed them, our enemies did, as well.
Yes, but not any more than any other gun.
Cost.
If you were a soldier, and were shot with one, it would hurt you badly or kill you. Would that meet the definition of bad in any way?
Machine Guns, like any other gun (with the possible exception of an air soft gun) could seriously harm, and even kill you if at point blank range. Any gun could kill you, so, yes. a machine gun is powerful.
I am guessing so that the machine gunners would not have far to go to get to them, which might have been necessary at any time, and speed would have been an asset.
machine guns,mustard gas,aircraft of any kind,oh and tanks just to think of a few
Well there is assault rifles but not any sub machine guns that I know of.
Planes, machine guns, poison gas, flame throwers.