Energy security is the association between national security and the availability of natural resources for energy consumption. Access to (relatively) cheap energy has become essential to the functioning of modern economies.
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In the ancient world porcelain was a necessity. For everyday use, it was used to create cups, plates, and other useful items. Exquisite, high-quality porcelains were usually housed as decoration or served as gifts. It was also used to create decorative statues and ornate trinkets for the higher classes.
