The article focuses on the keyword “What events happened 2 billion years ago” and addresses the search intent of users looking to learn about significant historical events in Earth’s geological and biological history. It provides an overview of the Proterozoic Eon, highlighting key transformations that occurred during this period, including changes in the planet’s geology, atmosphere, and the emergence of early life forms. The content is informative and educational, making it suitable for webmasters seeking to enhance their site’s offerings on Earth history, geology, or paleontology. It aims to engage readers with a blend of scientific insight and historical context, appealing to both casual readers and those with a deeper interest in Earth’s past.