Which development improve working conditions in many mines and factories during the late 1800s

Mike is hosting an outdoor movie screening for his school, and he needs to find out what time the sun is scheduled to set on the date he has in mind. which reference book would be most beneficial to him? a. atlas b. almanac c. thesaurus d. encyclopedia

Following archduke franz ferdinand's assassination, austro-hungarian leaders: a. aided the ottoman empire in its campaign to keep serbia under its control. b. executed nearly all prominent serbs living in austria-hungary c. threatened to invade serbia if serb leaders did not agree to a set of strict demands. d.. formed an alliance with great britain to protect austria-hungary from future attacks.

Soon-yi's house has a hexagonal window made up of six identical equilateral triangles as pictured below.