Final answer:
Java, an island in Indonesia, is the world's most populous island with a population density of more than 2,400 people per square mile. It is roughly the size of North Carolina and is home to roughly 14 times as many people as North Carolina.
Step-by-step explanation:
The world's most populous island is Java, which is part of the country Indonesia. Java is roughly the size of North Carolina, and is home to roughly 14 times as many people as North Carolina. Java has a population density of more than 2,400 people per square mile, and its capital city Jakarta is larger than New York City.