The question is who invented calculus first Isaac Newton or Gottfried Leibniz
It is now recognized that Newton created calculus in 1666 but kept his invention secret. Leibniz independently created calculus in 1675 and then published his work in two papers, which catapulted him to fame in Europe. Newton accused Leibniz of stealing his ideas, to which Leibniz responded with his own attacks. The war lasted over 20 years.