To affect something is to have an effect on it: Smoking can affect your health. To effect something is to make it happen: The doctor's treatment effected an immediate improvement in the patient's health. Affect is often used instead of effect, so take care when you are writing.
White symbolizes justice and the promise of the future. Blue stands for prosperity. Red represents unity and purpose and the blood shed during the struggle for freedom. Effective date: 4 December 1975.