Answer:
I am a king but also a common device of measure. What am I?
Often wandering the streets, this group of people cannot afford to be choosers.
Doing something of this nature is likely to land you in court
What has been around for millions of years but is never more than a month old?
An artΒ-form and its colourful result.
Be sure to shout for its answers are weak, but there is no language it cannot speak.