How did Hernán Cortés and his conquistador’s, who were in now Mexico, have enough ammunition to fight the natives while staying for years 1519–1521

Question

How did Hernán Cortés and his conquistador’s, who were in now Mexico, have enough ammunition to fight the natives while staying for years 1519–1521

In: Other

Answer 1

No one has mentioned this. Disease.

In addition to their local allies, the Spanish were fighting an army that was 1/10th of what it was at the beginning because everyone else had died because of European diseases.