Due to public outcry at home, the United States and its allies pulled out of Vietnam, which allowed the viet cong to successfully take over the south and unite Vietnam. Vietnam is still Communist to this day.
His orchestral music was a dramatic change from his early compositions because his symphonies and concertos grew longer in length and their sound needed additional instruments added to the orchestra. His music is considered the classical music of this time.
I believe the answer is:
- Pure mathematics
Proven by the difference in knowledge on astronomy between aztec culture and the Castillian.
- Urban architecture
Proven by the superior irrigation system that Aztec civilization had compared to Castilian civilization at that time.
Mexico became an active belligerent in World War II in 1942 after Germany sank two of its tankers. The Mexican foreign secretary, Ezequiel Padilla, took the lead in urging other Latin American countries to support the Allies as well. A small Mexican air unit operated with the United States in the Philippines.