1) The development of the World Wide Web Consortium (W3C) and web standards has ensured interoperability and compatibility across different web browsers and devices.

2) The English alphabet has five vowels: A, E, I, O, and U.

3) Egyptian mythology centers around deities such as Ra, Osiris, Isis, Horus, and Anubis. It explores concepts of creation, death, and the afterlife, with elaborate rituals and beliefs shaping ancient Egyptian society. The mythology is richly depicted in temple reliefs, burial sites, and hieroglyphic texts.

4) The novel "To Kill a Mockingbird" by Harper Lee has been translated into more than 40 languages and has sold over 40 million copies worldwide.