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 Thailand recommended by the National Science and Technology Development Agency) The first flag used for Siam was probably a plain red one, first used under King Narai (1656–1688). Naval flags later used different symbols on the red ground—a white chakra (the weapon of the Hindu god Vishnu, which is also used as the symbol of the House of Chakri), or a white elephant inside the chakra. Officially the first flag was created in 1855 by King Mongkut (Rama IV), showing a white elephant (a royal symbol) on red ground, as the plain coloured flag was not distinct enough for international relations.