National identity is another theme in the book. Colonial practices redefined national boundaries. As the British Empire grew, it came to draw its boundaries over a larger and larger portion of the globe, and at its greatest it controlled onefourth of the globe. While this control was a source of English pride, it was also a threat to British national identity: if Indians, Africans, and inhabitants of the West and East Indies were British subjects, were they also British? And if not, what constituted British national identity? Colonial authors sometimes depict British colonists clinging to British mores, as in Mansfield's short fiction or Forster's A Passage to India.