D. Christian leaders negotiated with Roman officials to stop persecution.
Answer: Travel time decreased as the steamboat could now travel against the current.
King William III and Queen Mary II came from the Netherlands.
The world's population today is much larger than it has been in anytime in the history of the world, and has been continuing to grow ever since the Industrial Revolution, since this raised the living standards and increased in incomes of an enormous number of people, especially in the western world. Advances in medicine have also played a major role.
