Modern History Adventure Book for Kids

I’m putting together an engaging modern-history book aimed at readers aged 9–12 and I’d like a children’s writer who can turn key twentieth- and twenty-first-century events into lively stories that spark curiosity rather than feel like schoolwork... (Budget: $250 - $750 USD, Jobs: Book Writing, Content Writing, Copy Editing, eBooks, Editing, Fiction, Ghostwriting, Research)