North Dakota State Flag3x5 North Dakota State Flag For Sale The North Dakota state flag is basically an exact copy of the banner carried by the North Dakota troop contingent in the Phillippine American War and was adopted on March 3rd, 1911. The flag is meant to resemble the Great Seal of the United States. Interestingly the flags official proportions are 33: 26 (shorter than most state flags) however; in practice, they are sold as 5: 3 ratios. The flag features a bald