Q: Determine the topic of the passage. "Alaska was purchased from Russia on March 30, 1867, for $7.2 million ($ adjusted for inflation) at approximately two cents per acre ($4.74/km2)." Topic:
A: Alaska

Q: Determine the topic of the passage. "However, adverse psychiatric reactions such as anxiety, paranoia, and delusions are possible." Topic:
A: Lysergic acid diethylamide

Q: Determine the topic of the passage. "Browser extension , which modifies the interface and/or behavior of web browsers" Topic:
A: Add-on

Q: Determine the topic of the passage. "In 494 BC, the Persians regrouped, and attacked the epicentre of the revolt in Miletus." Topic:
A:
Greco-Persian Wars