Regional trade agreements have the following advantages: all agreements concluded outside the WTO framework (which confer additional benefits beyond the WTO-MFN level, but which apply only between signatories and not other WTO members) are considered to be preferred by the WTO. Under WTO rules, these agreements are subject to certain requirements, such as WTO notification and general reciprocity (preferences should apply equally to each signatory to the agreement), where unilateral preferences (some of the signatories enjoy preferential market access to the other signatories without reducing their tariffs) are allowed only in exceptional circumstances and as a temporary measure.  Two countries participate in bilateral agreements. Both countries agree to relax trade restrictions to expand business opportunities between them. They reduce tariffs and give themselves privileged trade status. In general, the point of friction is important national industries that are protected or subsidized by the state. In most countries, they are active in the automotive, oil and food industries. The Obama administration negotiated with the European Union the world`s largest bilateral agreement, the Transatlantic Trade and Investment Partnership. A trade agreement signed between more than two parties (usually in the neighbouring region or in the same region) is considered multilateral. They face the main obstacles – to content negotiation and implementation. The more countries involved, the more difficult it is to achieve mutual satisfaction.
Once this type of trade agreement is governed, it will become a very powerful agreement. The larger the GDP of the signatories, the greater the impact on other global trade relations. The largest multilateral trade agreement is the North American Free Trade Agreement between the United States, Canada and Mexico.  Trade agreements designated by the WTO as preferential agreements are also referred to as regional agreements (RTRs), although they are not necessarily concluded by countries within a given region. Currently, 205 agreements are in effect as of July 2007. More than 300 people have been notified to the WTO.  The number of free trade agreements has increased significantly over the past decade. Between 1948 and 1994, the General Agreement on Tariffs and Trade (GATT), predecessor to the WTO, received 124 notifications. Since 1995, more than 300 trade agreements have been concluded.
 The WTO continues to classify these agreements according to the following types: Member States benefit from trade agreements, including increased employment opportunities, lower unemployment and increased market opportunities.