The answer is 1970
This happens when Earl Weaver’s Baltimore Orioles<span> won 108 of the games and a championship, and beating the </span>Cincinnati Reds in October (with 102 wins) . After this time, even post seasons series between 100-win teams are rares, let alone the world series.
Mexico has been involved in numerous different military conflicts over the years, with most being civil/internal wars.
It was a mixture of various reasons, although for the Spanish and Portuguese it was a question of reaching India for spice trades after the embargo instated on them by the Ottoman Turks.
The Portuguese went around Africa, and the Spanish tried sailing west across the barren ocean, and accidentally discovered America through Columbus.
It caused the rip tides like rise of Hitler or the reason Italy and Japan fell to facism and the US went ahead did their own treaties with the defeated.
The development of a farming culture among pre-Columbian Native American Indians helped ensure a more stable food supply.