What is the meaning of your flag?

[Kelvenya]

the blue is means the coast lines the coat of arms means the victory of independence from Panama.

[Velaland]

Yellow: Society and Intelligence
White: Peace
Pink: Diversity

[Holy Europe Empire]

blue blackground is Liberty and justice
star is a Europe country
eagle is a Country
croun is a Kaiser

[Daytshland]

The upper stripe signifies royalty and the Jews, the lower stripe signifies strength and the Germans, while the middle stripe signifies peace between each other. In the coat of arms the defiant Steinodler (golden eagle) represents German blood, while the hat on top (judenhut), appropriated by the Jews, represents subjugation under Hashem (god).

While writing this I felt I posted here before, apologies if so.

[Bogestan]

The blue on the flag represents the blue sky, the nature and the humanity, the pride of being who you are. The white is the color of cleanliness, peace, kindness & happiness. The gray, being the middle between white & black, holds the meaning of neutrality, fairness, treating people based on who they are as a person & what they are doing. The black stripe in the middle is a symbol of fate & the common path Bogestians are on.

[Daphomir]

The ring of eight golden stars and the dark blue background represent the unity of Daphomir, and the golden wreath represents the peacefulness of the country.

Don't ask why it resembles the EU's flag, it was completely by accident

[Pathonia]

The Prussian Blue background is meant to show the night sky, showing the void separating Pthadmoia and Earth.

The white and pale gold stripes are meant to show bright lights illuminating that wide empty expanse.

The red/black flower with the rings around it is the symbol of Empress Augusta Kossulminus.

The top left field shows the Pleiades, the closest star cluster to Pthadmoia. (And separates Pthadmoia from Earth)
The bottom left field shows the Hyades, a star cluster in between Pthadmoia and Earth.

The yellow star in the Hyades is Aldebaran, made prominent for being a star by which observers on Earth might find their way to the Pleiades and then Pthadmoia.