1900-01-01:

1917-05-01:

1937-01-01:

1940-08-25:

1941-07-01:

1944-10-13:

1988-07-01:

1989-07-28:

1990-02-27:

2003-05-26:

1900-01-01:

1904-01-01:

1923-01-01:

1925-11-03:

1940-08-25:

1941-07-01:

1944-10-13:

1968-01-01:

1987-01-01:

1988-01-01:

1988-07-01:

1990-02-27:

1900-01-01:

RUSSIA

1917-09-03:

GERMANY

1918-03-08:

GERMANY +

BALTIC STATE +

1918-11-28:

GERMANY

1919-01-03:

SOVIET LATVIA

1919-05-22:

GERMANY

1919-07-05:

ALLIED POWERS +

LATVIA +

UNITED KINGDOM +

AMERICA +

1919-07-08:

GERMANY +

LATVIA +

1919-10-30:

LATVIA

1939-10-05:

LATVIA +

SOVIET UNION +

1941-06-28:

SOVIET LATVIA +

SOVIET UNION +

1941-07-01:

GERMANY +

LATVIA +

1941-07-07:

GERMANY

1941-07-17:

OSTLAND +

GERMANY +

1944-10-13:

LATVIA +

SOVIET UNION +

1991-09-06:

LATVIA

2004-05-01:

EUROPEAN UNION +

LATVIA +

1900-01-01:

  Riga

1991-09-06:

  Rīga

1900-01-01:

  RIGA

2004-04-28:

  RĪGÕ

2004-05-01:

  RIGA

1900-01-01:

1917-09-03:

1917-09-05:

1918-03-03:

1918-03-08:

1918-08-01:

1918-11-06:

1918-11-18:

1919-01-03:

1919-05-22:

1919-07-05:

1919-07-08:

1920-08-11:

1924-01-01:

1941-07-07:

1944-10-13:

1949-01-01:

2003-05-26:

2004-04-28:

2009-07-01: