Transatlantic relations can refer to relations between individual states or to relations between groups of states or international organizations with other groups or with states, or within one group. For example:
Within a group:

• Intra-NATO relations

e.g. Canada–NATO relations

Between groups:

• EU - North American Free Trade Agreement (NAFTA) relations
• European Free Trade Area (EFTA) - NAFTA relations
• Transatlantic Free Trade Area (theoretical)
• CARIFORUM - European Commission (Economic Partnership Agreements)

Between a group and a state:

• Canada–European Union relations
• United States–European Union relations
• Canada - EFTA Free Trade Agreement ^[2][3]

Between states:

• Germany–United States relations
• Canada–France relations, etc.

By language and culture

• Commonwealth of Nations
• Community of Portuguese Language Countries
• Dutch Union
• La Francophonie
• Latin Union

The boundaries of which states are part of Transatlantic relations depends on the context. The term may be used as a euphemism to a specific bilateral relationship, for example, Anglo-American relations. The boundary could be drawn so as only to refer member states of the EU plus the US, when discussing Euro-American relations. In other circumstances it may include Canada, or non-EU countries in Europe. The term may also be used in the context of the wider Atlantic world including Africa and Latin America.

The early relationship between Europe and America was based on colonialism and mercantilism. The majority of modern states in the Americas can be traced back to colonial states that were founded by European nations, states that were very different from the pre-Columbian civilizations and cultures that had existed before.

Even after the United States (and later Canada) became independent, the main relationship between the two continents was one-way migration.

Politically the United States tried to keep a distance from European affairs, and Canada was subordinate to British foreign policy.

During the First World War however both North American states found themselves fighting in Europe and engrossed in European politics. President Woodrow Wilson's Fourteen Points helped to redraw the map of Europe.

Although the Roosevelt administration wanted to enter the war against Germany, the vast majority of Americans were too isolationist and disillusioned at their experience in World War I to seek involvement in the World War II, at least until the U.S. was attacked by Japan at Pearl Harbor on December 7, 1941, and Adolf Hitler declared war on the United States on December 11, 1941. Once involved, the US became pivotal to the war effort and therefore European politics.

After the second war the United States and Canada both desired a permanent role in the defence of Europe, and European states wanted protection from the Soviet Union. The result was the North Atlantic Treaty Organization, which became the lynchpin of Transatlantic relations during the Cold War.^[1]

Atlanticism is a philosophy which advocates for close cooperation between North America and Europe.

• Atlanticism
• Atlantic Community
• Atlantic Council
• Atlantic history
• United States–European Union relations
• European Union–NATO relations
• German Marshall Fund
• South Atlantic Peace and Cooperation Zone
• Transatlantic Economic Council
• Transatlantic Free Trade Area (TAFTA)
• Canada–European Union relations
• Canada–NATO relations
• Western World

• Jussi M. Hanhimaki, Benedikt Schoenborn and Barbara Zanchetta, "Transatlantic Relations since 1945. An Introduction", Routledge, London, 2012.

• A stronger EU-US Partnership and a more open market for the 21st century^{[permanent dead link]}
• European Union Institute for Security Studies: The Obama Moment - European and American Perspectives
• Atlantic Council of the U.S.: Transatlantic Cooperation Against Terrorism
• Atlantic Council publications on transatlantic economics, security, and politics
• "The Invisible Pillar of Transatlantic Cooperation: Activating Untapped Science & Technology Assets," Science & Diplomacy
• R. Nicholas Burns, Under Secretary of State for Political Affairs, called on the U.S. and Europe to embrace common purpose around an ambitious global agenda that would redefine its mission for the 21st Century.
• Center for Transatlantic Relations Archived 2014-11-27 at the Portuguese Web Archive