José Ruiz Massieu was killed this year, possibly under the direction of his country's president's brother. A constitutional rule preventing any candidate from holding public office before the election left Luis Donaldo Colosio's campaign manager his party's nominee after Colosio was assassinated in Tijuana. This was the year of the "December mistake," when the peso's devaluation set off an economic crisis. The Declaration of the Lacondón Jungle was issued at the beginning of this year to announce the demands of a group led by Subcommandante Marcos. The EZLN tried to 
José Ruiz Massieu was killed this year, possibly under the direction of his country's president's brother. A constitutional rule preventing any candidate from holding public office before the election left Luis Donaldo Colosio's campaign manager his party's nominee after Colosio was assassinated in Tijuana. This was the year of the "December mistake," when the peso's devaluation set off an economic crisis. The Declaration of the Lacondón Jungle was issued at the beginning of this year to announce the demands of a group led by Subcommandante Marcos. The EZLN tried to seize San Cristóbal and protested among other things their country's new free trade agreement. Ernesto Zedillo's electoral victory in this year made him the last PRI president until 2012. For 10 points, name this year NAFTA came into effect.
José Ruiz Massieu was killed this year, possibly under the direction of his country's president's brother.