Category:Writing systems by date of introduction Subcategories This category has the following 6 subcategories, out of 6 total. 0–9 Writing systems introduced in the 1st millennium (8 P) Writing systems introduced in the 1st millennium BC (5 P) Writing systems introduced in the 2nd millennium (5 C, 7 P) Writing systems introduced in the 2nd millennium BC (1 P) Writing systems introduced in the 21st century (3 C, 1 P)D Writing systems by decade of introduction (22 C)
