Environmental Crisis in Ancient Civilizations: Geographical Perspective and Lessons for Modern Sustainability

Abstract Environmental crisis is not only a modern concern but a repeated pattern in human history. Several ancient civilizations such as the Indus Valley, Mesopotamian, Egyptian, Greek, Chinese, and Mayan achieving success through favorable geographical conditions and effective use of natural resources. However, their growth eventually declined due to environmental mismanagement and climatic fluctuations. Factors such as deforestation, soil salinization, over-irrigation, droughts, and floods disrupted ecological balance and weakened agricultural systems, leading to socio-economic instability and the collapse of successful societies. This research paper examines these crises from a geographical perspective. The study is based on secondary data drawn from historical, archaeological, and environmental sources. This data analyzed through comparative and descriptive methods. This research shows that factors such as landforms, rivers, and climate have influenced the development and decline of civilizations. The findings reveal that the environmental decline of ancient societies provides crucial lessons for today’s world. In today's world there are many challenges like—climate change, resource depletion, and ecological imbalance. The paper concludes that sustainability requires a good balance between human needs and natural systems. Ancient information and modern tools such as Geo-Spatial Technology, Remote Sensing, and Artificial Intelligence, can guide society toward a sustainable future. Geography connects the past and the future through environmental knowledge. Geography helps us understand the link between old environmental practices and modern sustainability.