Labour turmoil in Poland during 1980 led to the formation of the independent trade union Solidarity, led by Lech Wałęsa, which over time became a political force.
Haosul laburist din Polonia anilor '80 a dus la formarea sindicatului independent Solidaritatea, condus de către Lech Wałęsa, care ajunge în timp o forță politică de sine stătătoare.