Which war spurred development of internet?

The development of the internet was largely spurred by the Cold War, particularly due to the need for robust communication systems during the arms race and the threat of nuclear conflict. In the 1960s, the U.S. Department of Defense initiated the ARPANET project to create a decentralized network that could withstand attacks and maintain communication. This project eventually evolved into the modern internet, facilitating data sharing and communication across multiple networks.