Which 3 of the following technological advances allowed European sailors to find routes to Asia

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

List three reasons why explorers began to explore new, and old areas. [[ps: doesn't explicitly say where. i think it's more in general.

How did tyrants attempt to gain the approval of common citizens?