He meant that if they failed then everything that the world has worked so hard for, to advance and become "smarter" than we once were would all be for nothing. We would enter a new Dark Age. The Dark Ages were an extraordinarily difficult period in the story of humanity. It is estimated that 100 million people died at the hands of war, poverty, and plague. But during this time new ideas and ideals were born and much of the groundwork was laid for the world we know today.
All of them except “Details are not important in reading”
1) If a new player scores today, we 
win the league this year.
A. would ✅
2) The goalkeeper pulled on his 
and walked out onto the pitch.
A. gloves ✅
3) His brother doesn't like 
sports. He prefers jogging on his own.
C. competitive ✅
