The New Times, from Kigali, the capital city of Rwanda, reported on 26 March 2006, reports that the old national flag of Rwanda is sometimes still used in international events, in spite of having been superseded in 2001.
Some women appear to have a flat butt because they either have poor posture, lack mass in the hip, or a combination of both. You can improve the shape of your butt with exercises. Corrective exercises focus on improving your posture, while strength exercises help you increase muscle mass.
In the case of flat low back posture, the bottom of the pelvis is brought towards the back of the thigh resulting in extra tightening in that muscle. The chronically tense hamstring contributes to the backward tilt of the pelvis which, as we've discussed, contributes to the flattening out of the normal low back curve.