The internet's development is attributed to various pioneers and milestones. In the late 1960s, the ARPANET project by the U.S. Department of Defense's Advanced Research Projects Agency laid the foundation for the modern internet. The first successful message transmission between two computers occurred in 1969. Tim Berners-Lee's invention of the World Wide Web in 1989 revolutionized internet usability, allowing users to access information through web browsers. The internet's evolution is a collaborative effort spanning decades and involving contributions from numerous innovators.