Answer:
Lech Walesa started the Solidarity organization by combining labor unions. (September, 1980)
The communist government in Poland declared martial law, banned Solidarity, and arrested Lech Walesa. (December 13, 1981)
The government released Lech Walesa due to endless public protests. (November 14, 1982)
Pope John Paul II visited Lech Walesa and gave him advice. (June 24, 1983)
Lech Walesa called for a stop to the public protests and offered peace. [I'm not sure about the best placement for this item.]
The communist government lifted the martial law in Poland. (July, 1983)
Lech Walesa won the Nobel Peace prize. (October 5, 1983)
The government lifted the ban on Solidarity. (April 1989)
Lech Walesa won the first free presidential elections in Poland. (December 9, 1990)
Step-by-step explanation: