Depends on where, when, and who.
There is no real power by democratic people. While they have real "power" to elect and collectively make decisions, the power roots from the decisions themselves and those who are elected to make decisions. Democracy is the weakest form of government.
From people.
A power of attorney is the written authorization that is given to a person so they can legally make decisions for another person. The person with the power of attorney can make decisions including legal and financial matters.
she is the supreme power in the judiciary
No, an executor does not have the power of attorney to make decisions on behalf of the deceased individual. The executor's role is to carry out the instructions in the deceased person's will and manage their estate, but they do not have the authority to make decisions on the deceased person's behalf.
The judicial Branch
yes
Democracy (democratic)
The power to make decisions about one's own future.
The power to make decisions about one's own future.
If that person granted the rights, yes, they have the power. The grantor can revoke that power at any time.
The purpose of a power of attorney document is to legally authorize someone to make decisions and act on behalf of another person, especially in situations where the person is unable to make decisions for themselves.