Flag of Poland the other two. Due to the horizontal bicolor being a relatively simple and widespread flag design, and white and red being the most popular colors used on flags, there are many flags worldwide that are similar or near identical to the flag of Poland despite being unrelated to it. For example, the historical flag of Bohemia, the major historical region of Poland's southern neighbor, the Czech Republic, consists of two horizontal stripes, white on top and red on bottom. Similarly to the flag of Poland, it is of heraldic origin, the coat of arms of Bohemia being "Gules, a lion
Flag of El Salvador the same cobalt blue and white stripes. The main flag has an aspect ratio of 189:335; the variants are both 3:5. From 1865 to 1912, a different flag was in use, with a field of alternating cobalt blue and white stripes and a red canton containing white stars. The designs of both sides of the flag are different; at the reverse side, it shows the then national coat of arms at the position of stars at obverse. The stars symbolized the provinces of the Republic; once a new province was created, one star was add to the obverse of the