Q: Determine the topic of the passage. "Halley's Comet last appeared in the inner Solar System in 1986 and will next appear in mid-2061." Topic:
A: Halley's Comet

Q: Determine the topic of the passage. "The civil rights movement was a series of worldwide political movements for equality before the law that peaked in the 1960s." Topic:
A: Civil rights movement

Q: Determine the topic of the passage. "The Moon is thought to have formed nearly 4.5 billion years ago, not long after the Earth." Topic:
A: Moon

Q: Determine the topic of the passage. "Maya numerals are a vigesimal ( base - twenty ) numeral system used by the Pre-Columbian Maya civilization ." Topic:
A:
Maya numerals