SANTIAGO, Chile—Three large aftershocks from last month's massive earthquake struck just as Chile's new president took power, delivering a tangible reminder that the forces that dominated his predecessor's final days will also shape Sebastián Piñera's new conservative administration. Photos View Slideshow AFP/Getty Images Map Learn more about location and magnitude of Chilean quakes and aftershocks. View Interactive The Aftermath View Slideshow Katie Orlinsky for The Wall Street Journal More photos and interactive graphics Mr. Piñera, a 60-year-old billionaire elected on a pledge to run Chile like a business, was traveling by car to his inauguration in the port city of Valparaiso late Thursday morning when one 6.9 magnitude quake hit. Two more struck later, prompting officials to rush through the swearing-in ceremony, cancel the postinauguration luncheon, and evacuate the congress building of assembled dignitaries, who included Spain's Crown Prince Felipe and Colombian President Álvaro Uribe.[Read more...]