Buddhists have five precepts or ethic requirements that they must adhere to. They must abstain from killing, abstain from taking what is not given, abstain from sexual misconduct, abstain from false speak, and abstain from drinking alcohol.
Buddhism understands the four noble truths as an accurate, empirical description of the experience of living, and as a methodology of understanding, social behavior, and mental development. Buddhism supports a culture of awareness, encouraging the availability of this teaching and practice.
I would have to say that it always spread ethical behavior along with The Buddha's Four Noble Truths and the Eight Fold Path.
There are no actual rules or laws in Buddhism because Buddha stated that no one should believe anything that comes to them unless it makes sense with them and their moral values. However, Buddhism does have Four Noble Truths and The Eight Fold Path which state how to reach enlightenment and many buddhists practice generosity, humility, humanity, honesty, respect, benevolence, responsibility, and many other humane values.
There are three major strands of Buddhism which are, Mahayana, Theravada, Vajrayana. If you include Ch'an / Zen Buddhism as a separate school then you have four.
It's hard to determine what the "Rules of Buddhism" are. The Four Noble Truths are an observation - Life is suffering. Suffering is caused by desire. Desire can be controlled to end suffering. This is done by following the Eightfold Path - but this is an observation not a rule. The Eightfold Path is a set of guidelines that one should follow to gain enlightenment, but they are not rules. Nobody is forced to follow them, nobody checks up on your progress or conformity. So Buddhism basically doesn't have rules. You do what you want, and you pay for your choices. The suggestions are there to help but the choice and the enforcement is all yours.
A+ls its dharma
The Four Noble Truths comprise the core ideas of Buddhism. They do not merely impact Buddhism, they are Buddhism. Everything in Buddhism springs from these tenets. If you can fully understand and embody the four truths, there is nothing else needed to attain enlightenment. Such is the nature of the Four Noble Truths.
there is no rules it's just their behavior.
Hinduism believed in right behavior or called as Dharma (righteous living). While Buddhism provided 4 truths which provided the idea of how to act & what to do.
Buddhism
Sort of... Taoism/Daoism is a religion which is based on a relaxed and natural way to find hapiness. However, Confucianism is not a religion-it is actually a set of rules for behavior for citizens and government. However, they both are one of the "Three Ways" which are Taoism, Confucianism, and Buddhism.
You can tell if they are not behaving on the way they act. If they are obeying the rules, that's GOOD behavior. If they DISOBEY the rules, that is bad behavior.