Please help 10 points plus brain

The areas with the highest population density in europe are most likely to be

This chart shows the number of soldiers killed according to two different sources. source a is a book written by university professors. source b is from a well-known historical website. in a paragraph, explain why the data presented is different, and evaluate the reliability of each source. which should be used in a school research project, and why?

What’s the reason for not digging up aztec ruins in modern mexico city