New York

iv

Vice President, Social Sciences: CHARLES LINSMEIER

Publisher: SHANI FISHER

Acquisitions Editor: TOM DIGIANO

Editorial Assistant: COURTNEY LINDWALL

Marketing Assistant: MORGAN RATNER

Senior Development Editor: BRUCE KAPLAN

Director, Content Management Enhancement: TRACEY KUEHN

Managing Editor: LISA KINNE

Media Editor: LINDSAY NEFF

Media Producer: ANDREW VACCARO

Photo Editor: CHRISTINE BUESE

Photo Researcher: DONNA RANIERI

Director of Design, Content Management: DIANA BLUME

Senior Design Manager: VICKI TOMASELLI

Cover Designer: PAULA JO SMITH

Interior Text Designer: AMANDA KAVANAGH

Senior Project Editor: JODI ISMAN

Art Manager: MATTHEW MCADAMS

Illustrations: ELI ENSOR

Production Manager: STACEY B. ALEXANDER

Composition: MPS LIMITED

Printing and Binding: LSC COMMUNICATIONS

Cover Photos: TSHOOTER/SHUTTERSTOCK (AIRPLANE WINDOW); ANTON BALAZH/SHUTTERSTOCK (EARTH IMAGE)

Back Cover Photo: IZABELA HABUR/ISTOCKPHOTO

Library of Congress Control Number: 2016931972

ISBN-13: 978-1-4641-8692-9

ISBN-10: 1-4641-8692-8

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All rights reserved.

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