What is the word "to call on god to witness that we are speaking the truth"?

Which of the following guidelines should be followed if you have a large spill that is dangerous or beyond your ability to clean up? a) call emergency authorities b) try to keep it quiet so nobody panics c) if the material is flammable, get several buckets of water to dilute it with d) wipe up as much as you can with appropriate rags

When does a metropolitan area become a megalopolis?

How did the russian revolution impact world war l ?