Happy Fourth of July!
This rangOli has two parts - (1) a freehand with the word USA. The letters U and A are related by 180 deg rotation. The vertically formed USA is rotated four times and assembled to obtain the pattern on the left. The gaps are filled by the circle of 13 stars (the original states of the USA). (2) This is a dotted rangOli with 50 dots represented by 50 stars (the number of states in the USA). This is a single line chikku kOlam. The stars and the line are given the red, white and blue colors, the colors in the US flag. This is a unique pattern possible with the number 50 (2 X 5^2). Enjoy!
Regards - mOhana