<s>[INST] Here is a passage from my child's textbook that includes a topic in social studies that you may not be familiar with. I'd like you to read the passage and try to understand the topic, then explain it in simpler terms. I'll give you the passage.

Here is the passage:
"To understand the concept of the commons, it is helpful to consider the Medieval European practice of the 'common land,' which referred to land that was shared by an entire community. This land was used for grazing livestock, gathering firewood, and growing subsistence crops. The concept of the commons has evolved over time, but the idea of shared resources and collective use remains central to its meaning. The commons also includes intangible resources, such as air, water, and knowledge. Today, the concept of the commons is being reexamined as we consider issues of climate change, intellectual property rights, and global governance. Some scholars argue that the commons can be an alternative to traditional models of property ownership and that it can promote social, economic, and environmental sustainability."

Now it's your turn. Can you explain this concept of the "commons" in simpler terms?[/INST]