I could not find a complete list but did find a partial list: Bulgaria
Hungary
Poland
Norway
Iran
Lebanon
East Germany
Italy
Sweden
Israel
United States
Greece
The number of competitors depends on how many countries send athletes for that particular Olympic sporting event. In weightlifting there is also many weight classes. In the Olympics there are 7 weight classes for the women and 8 for the men. Each has a varying number of competitors.
204 nations.
65
Yes, During Schwarzenegger's early years in bodybuilding, he competed in several Olympic weightlifting and power lifting contests.
Japan,Jamaica and Jordan
Sports competed at the 1896 Olympics: Athletics (Track and Field) Cycling Fencing Gymnastics Shooting Swimming Tennis Weightlifting Wrestling
Greece and United Kingdom
Switzerland, Great Britain and Greece
The nine sports competed in the first modern Olympic Games (1896 in Athens) were Athletics (track and field), Cycling, Fencing, Gymnastics, Shooting, Swimming, Tennis, Weightlifting, and Wrestling.
not all countries competed but normally all contries are invited to take part
There are two.ZimbabweZambiaSee the related link below for a full list.