You apparently dudn't read further. Ethics have nothing to do with religion, and I most certainly didn't tie them together.
When you look at the evolution of etics over 4000 years, they are rules that arrived over a period of time based on protecting the community from harm.
Ethics are rules that evolve over a period of time that ensure the greatest good for the greatest number for the longest time.
You apoear to be speaking about America which has a mere 320 million people. You do realize that there are 8 billion people on this earth and that there are multiple religious systems on this planet, don't you?
In Africa, as colonization took place, many cultures lost their structure, and the subsequent result was chaos.
You need to recognise that no religion teaches ethics.