One of the ways to identify a country is their flag ... differences in colour between the blue, yellow, and red vertical ...

National flags are much more ... the smallest country in the world (at just 44 hectares). Officially adopted in 1929, it has a square emblem of yellow and white with two keys - gold and silver.

What do red and yellow flags mean at Florida beaches? Florida beaches tend to use four colors to tell beachgoers current tide and surf conditions: Red, yellow, green and purple. Here's what they mean.