Flags are a universal characteristic of human civilization. With the exception of the most primitive societies and of nomadic peoples, it appears that every culture has invented for itself flags of one kind or anotherwith a remarkable similarity of form observable throughout the world. The functions of flags are nearly identical in all societies, and parallels in flag usages may be observed in diverse regions and eras.
Whitney Smith, Flags Through the Ages and Across the World
 |
Taiwan |
Chinese (Mandarin) |
 |
Tajikistan |
Tajik |
 |
Tanzania |
Swahili and English (both official), local languages |
 |
Thailand |
Thai (Siamese), Chinese, English |
 |
Tibet |
Tibetan, Chinese |
 |
Togo |
French (official), Ewé, Mina (south), Kabyé, Cotocoli (north), and many dialects |
 |
Tokelau |
English |
 |
Tonga |
Tongan (an Austronesian language), English |
 |
Trinidad and Tobago |
English (official), Hindi, French, Spanish |
 |
Tunisia |
Arabic (official), French |
 |
Turkey |
Turkish |
 |
Turkmenistan |
Turkmen, 72%; Russian, 12%; Uzbek, 9% |
 |
Turks and Caicos Islands |
English |
 |
Tuvalu |
Tuvaluan, English |