From the enigmatic Moundbuilders who left their mark in the heart of the Buckeye State to the National Road and Ohio Canal that drew an influx of settlers to the burgeoning capital, Columbus blossomed into an industrial hub that became the world's largest producer of buggies. The Arch City-with its illuminated streetcar arches curving gracefully through downtown-struggled through social and political unrest to thrive on its economic success and grow into a diversified capital city.