The correct answer is A) It was a period of rapid economic and social transformation. Hope this helps.
What time period are they speaking of?
The development of stone tools
The correct answer is <span>A) It made conquering new territory difficult for opposing armies.
There was no way to go across fields since any leaving the trenches would be punished by opponents who were in other trenches. Nerve gas and biochemical weapons were extremely successful because they would be thrown into the opposing trenches and would kill opponents.</span>
In regards to the Vietnam War, there was never full support for it, as, while many supported the war at times in support of the greater fight against communism, there were constantly protests for peace to try and get US forces out of Vietnam.
