1The ancient Egyptian civilization is famous for its pyramids and mummies.
2Is the modern Western civilization the most advanced in the world?
3The collapse of the Roman civilization had a profound impact on European history.
4If we do not address climate change, it could threaten the very survival of our civilization.
5There are many different civilizations throughout history that have made significant contributions to the world, such as the Chinese, Greek, and Mesopotamian civilizations.