whereupon

/ˌwɛrəˈpɑn/
adverb
  1. Immediately after which; and then.
    • She finished her speech, whereupon the audience applauded loudly.
    • The teacher gave the signal, whereupon the students began the test.
    • He told a joke, whereupon everyone laughed.
What does "whereupon" mean? | whatsthatwordmean | whatsthatwordmean