Turkmenistan
republic
Turks and Caicos Islands
NA
Tuvalu
constitutional monarchy with a parliamentary democracy; began
debating republic status in 1992
Uganda
republic
Ukraine
republic
United Arab Emirates
federation with specified powers delegated to
the UAE federal government and other powers reserved to member
emirates
United Kingdom
constitutional monarchy
United States
Constitution-based federal republic; strong democratic
tradition
Uruguay
constitutional republic
Uzbekistan
republic; authoritarian presidential rule, with little
power outside the executive branch