These are the articles I plan to review and contribute to:

• EU Member Countries (28)
  1.   Belgium
     • Regions
       1. Brussels
       2. Flanders
       3. Wallonia
     • Exclaves
       1. Baarle-Hertog
  2.   France
     • Regions of France
       1.   Nord-Pas de Calais (TL1)
       2.   Picardie (TL1)
       3.   Île-de-France (TL1)
       4.   Bourgogne (TL1)
       5.   Rhône-Alpes (TL1)
       6.   Provence-Alpes-Côte d'Azur (TL1)
       7.   Alsace (2)
       8.   Lorraine (2)
       9.   Languedoc-Roussillon (3)
       10.   Midi-Pyrénées (3)
  3.   Germany
     • States of Germany (16)
       1. Baden-Württemberg
       2. Free State of Bavaria (Freistaat Bayern)
       3. Berlin
       4. Brandenburg
       5. Free and Hanseatic City of Hamburg (Freie und Hansestadt Hamburg)
       6. Hesse (Hessen)
       7. Mecklenburg-Vorpommern
       8. Lower Saxony (Niedersachsen)
       9. North Rhine-Westphalia (Nordrhein-Westfalen)
       10. Rhineland-Palatinate (Rheinland-Pfalz)
       11. Saarland
       12. Free State of Saxony (Freistaat Sachsen)
       13. Saxony-Anhalt (Sachsen-Anhalt)
       14. Schleswig-Holstein
       15. Free State of Thuringia (Freistaat Thüringen)
     • Exclaves
       1. Büsingen
  4.   Italy
     • Autonomous regions with special statute (5)
       1.   Sardinia (Sardegna)
       2.   Sicily (Sicilia)
       3. Friuli-Venezia Giulia
       4. Trentino-Alto Adige/Südtirol
       5. Aosta Valley
     • Other Regions (15)
       1. Abruzzo (formerly Abruzzi)
       2. Apulia (Puglia)
       3. Emilia-Romagna
       4. Lazio (Latium)
       5. Liguria
       6. Lombardy (Lombardia)
       7. Marche (Marches)
       8. Molise
       9. Piedmont (Piemonte)
       10. Tuscany (Toscana)
       11. Umbria
       12. Veneto
     • Exclaves
       1. Campione d'Italia
  5.   Luxembourg
  6.   Netherlands
     • Exclaves
       1. Baarle-Nassau
  7.   Denmark
     1.   Denmark Proper
     2.   Greenland
     3.   Faroe Islands
  8.   Ireland
  9.   United Kingdom
     1.   England
     2.   Scotland
     3.   Wales
     4.   Northern Ireland
     5.   Gibraltar
     6.   Jersey
     7.   Guernsey
     8.   Isle of Man
  10.   Greece
  11.   Portugal
      • Autonomous Regions
        1.   Madeira
  12.   Spain
      • Insular Territories
        1.   Balearic Islands
        2.   Canary Islands
      • Autonomous Communities
        1.   Andalusia
        2.   Catalonia
        3.   Castile-La Mancha
        4.   Madrid
      • Autonomous Cities
        1.   Ceuta
      • Exclaves
        1. Llivia
  13.   Austria
      • States of Austria (9)
        1. Vienna (Wien)
        2. Lower Austria (Niederösterreich)
        3. Upper Austria (Oberösterreich)
        4. Styria (Steiermark)
        5. Tyrol (Tirol)
        6. Carinthia (Kärnten)
        7. Salzburg
        8. Vorarlberg
        9. Burgenland
      • Other
        1. Jungholz
  14.   Finland
      1.   Finland Proper
      2.   Åland
  15.   Sweden
  16.   Cyprus
      1.   Cyprus
      2.   Turkish Republic of Northern Cyprus
  17.   Czech Republic
  18.   Estonia
  19.   Hungary
  20.   Latvia
  21.   Lithuania
  22.   Malta
  23.   Poland
  24.   Slovakia
  25.   Slovenia
  26.   Bulgaria
  27.   Romania
  28.   Croatia

• EFTA Countries (4)
  1.    Switzerland
     • Cantons of Switzerland (26)
       1. Zürich
       2. Basel-Landschaft (CNL 479)
       3. Basel-Stadt (CNL 479)
       4. St. Gallen (with Flums/Flumserberg)
       5. Schaffhausen
       6. Thurgau
       7. Ticino
       8. Geneva
       9. Vaud
       10. Valais
       11. Fribourg
       12. Bern
       13. Neuchâtel
       14. Jura
       15. Solothurn
       16. Aargau
       17. Lucerne
       18. Zug
       19. Obwalden
       20. Nidwalden
       21. Uri
       22. Schwyz
       23. Glarus
       24. Graubünden
       25. Appenzell Innerrhoden
       26. Appenzell Ausserrhoden
  2.   Norway
     1.   Norway Proper
     2. Svalbard
  3.   Liechtenstein
  4.   Iceland

• CEFTA Countries (7)
  1.   Albania
  2.   Montenegro
  3.   Bosnia and Herzegovina
     1.   Bosnia and Herzegovina
     2. Republika Srpska
  4.   Serbia
  5.   Macedonia
  6.   Kosovo
  7.   Moldova

• CIS Countries
  1.   Russia
  2.   Ukraine

• European microstates
  1.   Andorra
  2.   Monaco
  3.   San Marino
  4.   Vatican City

• Commonwealth of Independent States
  1.   Georgia ( Tbilisi)
  2.   Azerbaijan ( Baku)
  3.   Armenia

• South Asian Association Member Countries (8)
  1.   Sri Lanka
  2.     Nepal
  3.   Bangladesh
  4.   India
     • States and union territories of India (36)
       1. Delhi (DL)
       2. Haryana (HR)
       3. Uttar Pradesh (UP)
       4. West Bengal (WB) - Calcutta

• ASEAN Member Countries (10)
  1.   Cambodia
  2.   Malaysia
     • States
       1.   Johor
       2.   Sabah
     • Federal Territories
       1. Kuala Lumpur
  3.   Philippines
  4.   Singapore
  5.   Thailand
  6.   Vietnam
  7.   Indonesia
     • Geographical units (7) & Provinces (34)
       1. Lesser Sunda Islands
          • Bali
       2. Java
          • Special Region of Yogyakarta
          • Central Java
       3. Kalimantan
          • East Kalimantan
       4. Sulawesi
          • North Sulawesi
          • South Sulawesi
       5. West Papua
          • West Papua
       6. Maluku Islands
          • Maluku
  • ASEAN Candidate/Observer Countries (2)
    1.   East Timor

• East Asia (5)
  1.   China
     • Provinces, Municialities, Autonomous areas of China
       1. Beijing
     • Special Administrative Regions
       1.   Hong Kong
       2.   Macau
  2.   Taiwan
  3.   Japan
     • Regions (9) & Prefectures (47)
       1. Hokkaidō (1): Hokkaidō
       2. Tōhoku (6): Aomori, Iwate, Miyagi, Akita, Yamagata, Fukushima
       3. Kantō (7): Ibaraki, Tochigi, Gunma, Saitama, Chiba, Tokyo, Kanagawa
       4. Chūbu (9): Shizuoka, Aichi, Gifu, Yamanashi, Niigata, Nagano
       5. Kansai (7): Shiga, Kyoto, Osaka, Hyogo, Nara
       6. Chūgoku (5): Okayama, Hiroshima
  4.   South Korea
     • Special City (1)
       1. Seoul
     • Metropolitan City (6)
       1. Incheon

1.   USA
   • U.S. States (50)
     1.   New York
     2. Georgia
     3.   Alabama
     4.   Mississippi
     5.   Arkansas
     6.   Tennessee
     7.   Missouri
     8.   Illinois
     9.   Indiana
     10.   Michigan
     11.   Pennsylvania
     12.   Virginia
     13.   Maryland
     14.   Ohio
     15.   California
     16.   Nevada
     17.   Arizona
     18.   Utah
     19.   North Carolina
     20.   Hawaii
     21.   Florida
     22.   Connecticut
     23.   Rhode Island
     24.   Massachusetts
     25.   New Hampshire
     26.   Maine
     27.   Vermont
     28.   New Jersey
     29.   Delaware
     30.   New Mexico
     31.   Texas
     32.   Louisiana
   • Federal district
     1. Washington, D.C.
2.   Canada
   • Provinces of Canada (10)
     1.   Ontario
     2.   New Brunswick
     3.   Nova Scotia
     4.   Prince Edward Island
     5.   Quebec
3.   Mexico
   • Mexican States
     1. Baja California

• Caribbean Community Member Countries (15)
  1.   Grenada
  2.   Guyana
  3.   Trinidad and Tobago
  4.   Barbados
  5.   Saint Vincent and the Grenadines
  6.   Saint Lucia
  7.   Dominica
  8.   Saint Kitts and Nevis
  9.   Antigua and Barbuda
  10.   Bahamas
• Sistema de la Integración Centroamericana (SICA) Member Countries (7)
  1.   Costa Rica
  2.   Nicaragua
  3.   Honduras
  4.   El Salvador
  5.   Guatemala
  6.   Panama
• Other
  1.   Anguilla
  2.   British Virgin Islands
  3.   United States Virgin Islands
  4.   Puerto Rico
  5.   Sint Maarten
  6.   Saint Martin

1.   Australia
   • Australian States (6)
     1.   Queensland
     2.   New South Wales
     3.   Victoria
   • Mainland Territories (3)
     1.   Australian Capital Territory
2.   New Zealand
3.   Hawaii
4.   Guam
5.   Marshall Islands
6.   Federated States of Micronesia
   1. Chuuk
   2. Kosrae (Transit)
   3. Pohnpei (Transit)
7.   Northern Mariana Islands
   1. Saipan
   2. Rota

• Western Asia (2)
  1.   Turkey
  2.   Israel
• Arab League Member Countries (22)
  1.   Jordan
  2.   Syria
  3.   Egypt
  • Arab Maghreb Union Member Countries (5)
    1.   Morocco
    2.   Tunisia
  • Gulf Cooperation Council Member Countries (6)
    1.   United Arab Emirates (7)
       1. Dubai
       2. Abu Dhabi
       3. Sharjah
       4. Ajman
       5. Fujairah
       6. Ras al-Khaimah
       7. Umm al-Quwain
    2.   Kuwait
    3.   Bahrain
    4.   Oman

• Southern African Development Community Member Countries (15)
  1.   Zambia
  2.   Zimbabwe
  3.   Mozambique
  • Southern African Customs Union Member Countries (5)
    1.   South Africa
       • Provinces of South Africa (9)
         1. Eastern Cape
         2. KwaZulu-Natal
         3. Free State
         4. North West
         5. Gauteng
         6.   Mpumalanga
    2.   Botswana
    3.   Namibia
    4.   Lesotho
    5.   Swaziland
• West African Economic Community (ECOWAS) Member Countries (15)
  • West African Monetary Zone Member Countries (6)
    1.   Ghana
    2.   Nigeria
  • West African Economic and Monetary Union Member Countries (8)
    1.   Togo
    2.   Benin