Let's clarify the fourth statement: "People used them as stamps for making patterns on fabrics."
In the context of ancient Mesopotamia, the Indus Valley, and Egypt:
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Mesopotamia: Seals were often used for practical purposes, such as marking ownership or authenticity on clay tablets or goods, but they were also used to stamp designs onto clay and textiles in some cases.
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Indus Valley: There is evidence that seals were used for stamping on goods, but less is known about their use on fabrics specifically.
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Egypt: While seals and cartouches were used primarily for authorizing or marking ownership, they were not widely used as stamping tools for fabrics like in some other cultures.
With that in mind, the use of seals specifically as stamps for creating fabric patterns may not be universally applicable and can be less relevant for this context. Therefore, if you're focusing strictly on the primary uses of these seals, this statement could be considered less accurate.
In summary, while seals were used for various stamping purposes, the statement about fabric patterns is not as universally applicable as the others. The first three statements are definitely true; the fourth may not be applicable in all contexts.