Yes, some of them are.
in china there laws are in chinease us laws are in English
Those of the US Constitution.
There are a variety of US aviation laws. It is better to refer to a manual for a complete list. You should also know those laws by heart if you're taking an aviation exam!
Because the US's drug laws are different. We have the FDA.
They are very different than in the US. As traffic laws are dictated by each state, they are also going to be different in the many cities you go to in Spain.
to protect themselves and those around them.
State laws vary across the country and laws are different in many countries. Please see: related links for U.S. Laws
No. The US, nor any other country, has authority to write laws for a different sovereign nation.
The Legislative branch makes law. The Judicial branch ensures that those laws are legal and meet the requirements of the US Constitution, and the Executive branch enforces those laws.
No. As the head of the US Executive branch, the President is responsible for ensuring that US laws are enforced. The Legislative branch, Congress, establishes laws. The judicial branch, the US Supreme Court determines the Constitutionality of those laws that are brought before them.
What laws are applicable depends on both the nature of their being in that country, and also the Status of Forces Agreement (SOFA) reached with those countries. Military personnel in Afghanistan will probably have some different guidelines than those stationed in Turkey, for example.
No one answer- since the need for a license is determined by state laws- and there are 50 different states- 50 different sets of laws- and that is just in the US. Other nations have other laws.