7th G7 summit

The 7th G7 Summit was called the Ottawa Summit, and was held in Montebello, Quebec, Canada and nearby Ottawa between July 20 and 21, 1981. The venue for the summit meetings was the Château Montebello. 
The Group of Seven (G7) was an unofficial forum which brought together the heads of the richest industrialized countries: France, West Germany, Italy, Japan, the United Kingdom, the United States, Canada (since 1976) and the President of the European Commission (starting officially in 1981). The summits were not meant to be linked formally with wider international institutions; and in fact, a mild rebellion against the stiff formality of other international meetings was a part of the genesis of cooperation between France's President Giscard d'Estaing and West Germany's Chancellor Helmut Schmidt as they conceived the first Group of Six (G6) summit in 1975.
Leaders at the summit.
The G7 is an unofficial annual forum for the leaders of Canada, the European Commission, France, Germany, Italy, Japan, the United Kingdom and the United States.
The 7th G7 summit was the first summit for French President François Mitterrand, Italian Prime Minister Giovanni Spadolini, Japanese Prime Minister Zenko Suzuki and U.S. President Ronald Reagan. 
Participants.
These summit participants are the current "core members" of the international forum:
Issues.
The summit was intended as a venue for resolving differences among its members. As a practical matter, the summit was also conceived as an opportunity for its members to give each other mutual encouragement in the face of difficult economic decisions.