The conquistadors would go on an expedition searching for new indigenous groups leaving from a recently built colony.
After landing in a new region, the Spanish would attempt to meet peacefully with the first groups of Indigenous people that they encountered after building a town. Their aim was to discover which group in the area was the most powerful by communicating with the other groups that they had found.
The Spanish would then locate the most powerful group and take thier leader and threaten to take thier life if they didnt follow the orders of the Spanish.
If a fight is needed then the spanish would find open ground to fight on so thier advanced weapons and cavalry would give them an even larger advantage.
The Spanish Conquistador would build a new colony and become leader. The indigenous would be sold into slavery.
As the conquistador is settling in, thier second in command would leave on another expedition and continue the loop.