16th century (1521).
If by aztest you are refering to the Aztec Empire, there are not any 20th century developments because it did not exist then. This empire lasted from 1428 to 1521.
Tenochtitlan was founded about 1325 and destroyed by the Spanish in 1521.
It was one of the reasons Spanish conquistador Hernan Cortes conquered Mexico in 1521.
85% of 1,521 = 85% * 1521 = 0.85 * 1521 = 1,292.85
1521 - 1474 = 47
1521 = MDXXI
1521/3 = 507
39 39X39=1521
Magellan died in 1521
3011
telnet hostname.com 1521