Knowing only one language, English.

Knowing only one language, English. You can communicate with people on Earth has more than a billion people, most of whom are from multinational giants that played a key role both in the study of political economy.English is the main language used in the foreign language for communication between most countries. Many people define English as an international language. (International language) or a universal (global.50 countries have declared English as their official language. And international organizations such as the United Nations was also the first in English as the main language for communication.