Book publishing, advertising, media and even the fashion industry are all located in New York. These are the main industries that are being reshaped and redefined by technology and the Internet.
Given that banks in Europe hold large claims on Greece, if Greece gets in trouble and those claims lose value, the governments of the banks that hold Greek paper are on the hook. This is the link through which contagion propagates.
US companies often think about strategy in terms of chasing customers or pursuing market opportunities, but Indian firms will more often start by identifying their strengths, identifying their customers' needs, and then try to meet those needs.