The history of Mexico is one that has been marked by conflict and frequent change. The nation's roots are in tribes who's legacies' span all the way back to the beginning of recorded history. These civilizations shaped the foundations of Mexico until the first European intrusion by Spain in the 1500's. In the face of continued Spanish oppression, which lasted well into the 1800's, these native peoples fought violently to preserve their independence and their fundamental rights. The 1800's was ridden with coups and revolution, but these were ultimately only the precursors towards the true Mexican Revolution which spanned the first quarter of the twentieth century. This revolution is perhaps one of the most important revolutions that has taken place in recent history because it was not a revolution led by factions battling for governmental control, or the bourgeoisie thinkers developing new ideas. Instead, it was a revolution led by simple men rising up and asserting their fundamental rights, and succeeding. The revolution was not only essential to the evolution of human rights and democracy and Mexico, but was also significant as it was one of the first successful third world revolutions. To an extent the revolution laid the groundwork for allowing democracy to emerge from authoritarianism in other third world nations.