Final answer:
Mexico had a stable government with multiple political parties winning elections at the national level before the year 2000.
Step-by-step explanation:
Prior to the year 2000, Mexico had a stable government characterized by multiple political parties winning elections at the national level. This period was known as the PRI (Institutional Revolutionary Party) era, which lasted for more than 70 years. The PRI maintained a dominant political position and controlled the presidency, adopting a corporatist system that incorporated various interest groups and allowed for different parties to participate in elections, although the PRI ultimately won most of the elections during this time.
Learn more about Mexico's government prior to the year 2000