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 made an impact on. 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.
- Towns in a 20-mile radius around the nuclear power plant in Fukushima, Japan were affected by the accident.
- The teenager's excessive video game playing affected his grades.
- After the BP oil spill, the government effected (brought about, executed) sweeping environmental regulation.
- The 2008 financial crisis led the government to effect changes in how financial institutions are regulated.
- Sales for Apple's iPhone 4 were not affected by the problems with its antenna.
- Sally's nervous temperament affected both her score on the standardized test.
You can affect something that already exists; but when you effect (verb form) something, you usually bring it into existence.