Why do some English people say an r at the end of law?

Some English speakers, particularly in parts of the West Midlands and other regions, pronounce an "r" at the end of Words like "law" due to a phenomenon known as "intrusive R." This occurs when a non-rhotic accent, which typically drops the "r" sound at the end of Words, adds an "r" sound to facilitate smoother transitions between vowel sounds in connected speech. This feature can also be influenced by neighboring dialects or speech patterns, contributing to regional variations in pronunciation.