The document defines key economic terms including economy, entrepreneur, NAFTA, imports, exports, domestic trade, international trade, tourism, trade surplus, and trade deficit. It explains that an economy is the wealth and resources of a country, an entrepreneur starts their own business, NAFTA eliminates trade taxes between North American countries, imports enter a country while exports leave it, and domestic trade occurs within one country versus international trade between countries. It also defines tourism as travel for leisure purposes and that a trade surplus happens when exports exceed imports, while a trade deficit means imports are greater than exports.