What technology and knowledge did the spanish need to get to tenochtitlan

Battle of Otumba

Before reaching Tlaxcala, the scanty Spanish forces arrived at the plain of Otumba Valley (Otompan), where they were met by a vast Aztec army intent on their destruction. The Aztecs intended to cut short the Spanish retreat from Tenochtitlan and annihilate them.

yes

it is because 3 because the citizen the northern democratic party watned the warning on red to blue because it is purple. lol