In Matched, what individual freedom or freedoms have the citizens of the society sacrificed in order to survive or exist?

In Matched by Ally Condie, the citizens of the Society live in a dystopian universe in which almost all of their freedoms have been curtailed and regulated by their government. The government "sorts" its citizens, assigning them their jobs, their houses, and even their life partners. They are provided with rationed food and are not allowed to live beyond the age of eighty. In order to achieve the latter, the government euthanizes its senior citizens by poisoning their food.
The citizens are required to marry at the age of twenty-one and are not allowed to choose their own partners. Instead, the government "matches" them together, and the couple only learn each other's identities at a ceremony called the Match Banquet. The couple are then given a short period of courting before they are required to get married.
The government also places its citizens under strict surveillance via the use of "ports," two-way channels in their households by which the government can contact the people and keep a watch on them. Culture is also regulated by the government, and only a hundred of every type of work of art from the past has been allowed to survive, like the Hundred Poems, Hundred Stories, and Hundred Songs.