Complex sentence: Between 1894 and 1902, Kidd traveled extensively in the United States and Canada (1898), and in South Africa (1902), and also became acquainted with many important people in London in the circles of politics, science, and literature.
Split into simpler sentences: Between 1894 and 1902, Kidd traveled extensively in the United States and Canada (1898), and in South Africa (1902). He also became acquainted with many important people in London in the circles of politics, science, and literature.