T
Taiwan is slightly larger than Massachusetts and Connecticut combined. Tajikistan is slightly smaller than the state of Illinois. Tanzania is three times bigger than New Mexico. Thailand is about twice the size of Oregon. Togo is more than twice the size of Vermont. Tonga is about the size of Lexington, Kentucky. Trinidad and Tobago is about the size of Anchorage, Alaska. Tunisia is twice the size of South Carolina. Turkey is more than twice the size of Montana. Turkmenistan (formerly Turkmenia) is about twice the size of Oregon. Tuvalu is slightly smaller than Hastings, Minnesota.

U
Uganda is twice the size of Pennsylvania. Ukraine is more than twice the size of Arizona. United Arab Emirates is slightly smaller than Maine. United Kingdom consists of Great Britain (England 50,334 sq mi , Wales 8,019 sq mi and Scotland 30,414 sq mi ) and Northern Ireland (slightly larger than Connecticut), and is twice the size of New York State. The United States is less than half the size of Russia. Uruguay is about the size of Oklahoma. Uzbekistan is about one-tenth larger than California.

V
Vanuatu is slightly smaller than Connecticut. Vatican City (Holy See) is about the size of Washington, Nebraska. Venezuela is a third larger than Texas. Vietnam is about the size of Missouri and Iowa combined.

W
Western Sahara is about the size of Colorado.

X
None.

Y
Yemen is slightly less than twice the size of Colorado.

Z
Zaire (see Congo, Democratic Republic of). Zimbabwe is slightly larger than Montana. Zambia is about one-tenth larger than Texas.

This concludes "Americans, Know Thy World." If you found an error, please feel free to post the correction in the comments section below. I hope you enjoyed this whirlwind tour of the globe. If you made any guesses before you started, how did you do? If you feel inspired to do so, I encourage you to do further research into one or more countries.

For those who made it all the way through both lists and who fancy themselves incurably curious armchair researchers, here is an added bonus. The international territory of Antarctica (at the South Pole) boasts an area of 5.5 million square miles in the summer. It is smaller than Russia, but larger than the United States and Mexico combined. In the winter, the area becomes about the size of Russia. Conversely, there is very little land area around the North Pole (image, right).

Happy Trails!