Final answer:
The concept of a "flat" world refers to the idea that globalization has leveled the playing field for emerging economies.
Step-by-step explanation:
The concept of a "flat" world refers to the idea that globalization has leveled the playing field for emerging economies. According to Thomas Friedman, technology and the increasing influence of media have driven globalization and transformed core economic concepts by enabling core-nation corporations to recruit workers in countries with lower labor costs. This has resulted in a more integrated global economy with fewer trade restrictions, allowing corporations to compete equally around the globe.