Did you know that the Romans were the first Europeans to reach the USA - in a submarine, that a moon rocket was launched in the Middle Ages and that 18th-century explorers travelled across water by train? Drawings of these machines and humorous text make this a book appealing to all ages.Did you know that the Romans were the first Europeans to reach the USA - in a submarine, that a moon rocket was launched in the Middle Ages and that 18th-century explorers travelled across water by train? Drawings of these machines and humorous text make this a book appealing to all ages.