This is only true per square mile or square kilometer, but it's false generally (so I would say that the statement is false).
For example, Hong Kong and Macau have by far higher population density (with Macau said to have the biggest population density in the world) than mainland China, but Mainland China has a larger population.
The boy's counsel could argue that the
sentence is cruel and unusual punishment. This is prohibited by the Eighth Amendment. The boy does not have the judgment of an adult and cannot be punished as an adult. In fact, even if the boy were an adult, life in prison could be a cruel or unusual sentence.
Answer:
settlers brought Christianity and english language was adopted