What is a powder keg and how was Europe an explosive environment before WWI? Must be 5-8 sentences

About the story anne franks what reminder of the war outside keeps the residents up at night? a. ambulances b. soldiers laughing c. bombings

The five extra days added to the egyptian calendar were for?

How do we make changes to the us constitution? a. through presidential order. b. through direct primary elections. c. through the amendment process. d. we can't!