Effected means executed, produced, or brought about. For example, The dictatorial regime quickly effected changes to the constitution that restricted the freedom of the people. On the other hand, affected means impacted. It is the past tense of the verb form of affect, which means to impact. For example, Carbon di-oxide emissions affected the environment.
So we can say that "The dictatorial regime quickly effected changes to the constitution that affected the freedom of the people."
See also: Affect vs Effect
- The blasts at the Boston marathon in April 2013 affected the people of the city deeply but they refused to be terrorized.
- Towns in a 20 mile radius around the nuclear power plant in Japan were affected by the accident during the earthquake.
- The teenager's excessive video game playing affected (impacted) his grades.
- After the BP oil spill, the government effected (brought about, executed) sweeping environmental regulation.
- The BP oil spill adversely affected marine wildlife in the Gulf of Mexico and surrounding areas.
- The 2008 financial crisis led the government to effect changes in how financial institutions (like banks and credit unions) are regulated.
- Sales for Apple's iPhone 4 were not affected by the problems with its antenna.
- Sally's nervous temperament affected both her SAT and ACT scores.
- Tragedy struck on 9/11 and our condolences to all the people who were affected by the attack.
You can affect something that already exists; but when you effect (verb form) something, you usually bring it into existence.