Energy climate change , resource scarcity , demographics , economic rebalancing .
I think the answer is (C) The Internet led to widespread on-line voting in the 2000 elections.
B. they were pacifists, believing violence and war were wrong.
It was "Trotsky" who welded the new Red Army into a disciplined fighting force, although his efforts would prove ultimately to be in vane since he was later persecuted for being a traitor to the state.