World History: Patterns of Interaction © 2012 is a highly integrated, high school world history textbook program with enhanced HISTORY® curriculum that provides teachers with a practical and motivational approach to help students think critically and reflectively. Together, HMH & HISTORY® infuse social studies with streaming video and interactive features that bring content to life for students and help them make connections between the past and present. Meeting the needs of all learners is no easy task. This is why Houghton Mifflin Harcourt created World History: Patterns of Interaction. Designed to engage students with the narrative while integrating rich multimedia assets, the program brings content to life for students and enriches their understanding. - Publisher.