Answer:
d) nationalism/race or ethnicity
Explanation:
World War One was primarily about, nationalism , while World War two largely concerned race or ethnicity.
The Bhopal disaster (or Bhopal gas tragedy), a major gas leak incident
Apollo 11 was the first manned mission to land on the Moon. The first steps by humans on another planetary body were taken by Neil Armstrong and Buzz Aldrin on July 20, 1969. The astronauts also returned to Earth the first samples from another planetary body.