Mexico adopted the current flag in 1968. The colors for this design were decided on following the War of Independence.
Which design? Its flag and national symbol? Its current territorial extension? See related questions for some clues.
The current flag of Puerto Rico was introduced in 1952, having been adopted by the commonwealth. However, the flag's basic design has been used as far back as 1868.
Current flag was adopted on 16th September 1968.
As an independent country, Mexico adopted its very first flag on February 24, 1821. It however, had a different design with diagonal lines and no coat of arms; the colors have remained the same (green, white, red) throughout its history, however. The current design was adopted on September 16, 1968.
In February 24, 1821, as the Mexican War of Independence (1810-1821) came to an end. It had however, a different design with three diagonal stripes and yellow stars which nonetheless, had the same red, green and white colors of the current flag. A more modern design was adopted on November of the same year, and the current, final design was adopted on September 16, 1968.
The current design for the Texas state flag was adopted by the Republic of Texas 25 January 1839. Prior to that, the republic's flag had been a single gold star in the middle of a blue field.
Only the three present in the current flag: red, white, green.
The design of the Polish flag dates back to the 13th century, but the modern red and white colors were officially adopted in 1919. The creator of the current flag design is unknown.
The current design for the Mexican flag was adopted in 1968. Before that year, there have been several designs, which include different stripe orientations (e.g. diagonal instead of vertical), as well as the coat of arms, which in general terms, has had a golden eagle since it first appeared, in 1821.
In 1946, the design of the German flag was changed to the current tricolor of black, red, and gold, which replaced the previous flag used during the Nazi era.
There wasn't one. This is because there was no nation of Austalia until Federation in 1901, which is the year the flag was designed. Each of the colonies had adopted their own flag prior to Federation. The Australian flag has always had its current design, with the Southern Cross constellation and the Union Jack in the top left hand corner. The only changes have been minor changes to the stars of the Southern Cross, and the Federation Star.