Germany's economy was in a sad state of affairs after the war and now having to pay reparations that were astronomical (approximately $35 billion) the economy was in a very vulnerable state, the whole country was and it was searching for its savior.
To go going foward........
The best option in terms of why the official languages of every Latin American country are European would be that "<span>Native languages have completely died out over time," since the European colonizers took control of the region. </span>
The Pearl Harbor Bombing was a factor.