My first displays the wealth and pomp of kings,
Lords of the earth! their luxury and ease.
Another view of man, my second brings,
Behold him there, the monarch of the seas!

But, ah! united, what reverse we have!
Man's boasted power and freedom, all are flown;
Lord of the earth and sea, he bends a slave,
And woman, lovely woman, reigns alone.

- From "Emma" by Jane Austen

What is being referred to in this poem?