The term "Backbone" commonly refers to the series of vertebrae that make up the spine in humans and many animals. It provides structural support, protects the spinal cord, and allows for flexibility and movement. The backbone is essential for maintaining posture and enabling various physical activities. In a broader context, "Backbone" can also refer to the main support or foundation of a system or organization. For example, in technology, the internet backbone consists of high-capacity data routes that connect different networks, ensuring efficient communication and data transfer across the globe.