Short answers, pulled from the story.
The name Prague emerges from the Czech word pražiti, meaning to roast or burn. Linguist Antonín Profous corrected earlier theories in the mid-20th century by arguing the name refers to hot arid places due to the shale bedrock where the castle was founded.
Charles IV ruled as Holy Roman Emperor from 1346 until his death in 1378. He transformed Prague into an imperial capital during this period by ordering construction on St. Vitus Cathedral in 1344 and opening Charles University in 1347.
Mobs pillaged and burned the Jewish quarter during Easter 1389 killing nearly all 750 residents. This event followed clergy announcements that Jews had desecrated the host wafer.
Soviet tanks invaded on the 21st of August 1968 to crush reforms led by Alexander Dubček. The world's largest Stalin Monument stood on Letná hill until its destruction in 1962.
Prague accounts for 25 percent of Czech Republic GDP as its regional economy. Services make up approximately 80 percent of employment across the city with financial and commercial services dominating alongside trade restaurants hospitality and public administration.