Are paid employees legally entilted to an annual pay rise?

Not unless it states so in your contract of employment

No. It is up to an employer if they want to give pay raises. Unless you are making less then the minimum wage.

No. If you want a pay raise, sleep with your boss or find a better paying job.

Federal workers usually get at least a cost of living raise, but I don't know if there is law for it.

nobody is ENTITLED to any wage rise but the employers would be rather stupid not to offer at least something each year to cover infaltion.
BUT IT IS NOT AGAINST THE LAW OR THE LAW DOES OFFER ENTITLEMENT AS A RIGHT
as stated previously they are obliged to pay the min wage that is law

I don't think there's a legal requirement for employers to review salaries annually. It is however, a reasonable thing to expect some sort of review from a job market point of view.

If you get paid a certain amount a year, you can reasonably expect to at least maintain the same standard of living if you were to perform the same job equally well for the same employer. With inflation, this means that an employer cannot say that you are unreasonable in expecting a pay rise to match the rate of inflation for that particular year. However, as I said, I don't think it's a legal obligation for employers to do that. Most do it because they know that if their staff isn't happy with their pay position, their commitment to their work will suffer, and they may ultimately lose employees to others who would appreciate their financial needs better. Losing employees would cost a company money and time in sourcing and training new staff.

The problem arises when most or all employers in a particular industry/field in a particular area takes the same attitude in not doing annual reviews.

No, there is no legal entitlement to an annual pay raise in the US. Nor is there an entitlement in most countries.

No, that's up to the employer when, if ever, to give you a raise, unless you have a contract that specifies that you'll get one and when.

in a nutshell - no

No legal entitlement

As long as the yearly increase in min wage or higher is being met

No, raises are not guaranteed each anniversary with a company, however, most do give a small percentage, say like two to three percent. It amount to about a cost of living increase. If you were making the minimum wage and it went up then your employer would have to immediately increase your salary to that amount. In this case you could thank the dear old government for the little raise you received.