A quick image search for "red flag with yellow star" will give you a few different results, so we'll look at the most common examples and the countries they represent. News.

Flags often imitate or are influenced by other nations, creating “flag families.” For example, the Netherlands’ red, white and blue flag from the 1500s set a precedent.

23 Red, White, and Blue Foods and Drinks for the Fourth of July and Beyond. Serve up a star-spangled spread this Independence Day with an appropriate (and delicious) color scheme.