How did a small number of spanish conquistadors able to conquer huge native american empires

How did spanish benifit from 1494 treatiy of tordesillas

Why was christianity so appealing to the people of the roman empire

In 1816, john c. calhoun proposed that: a. that the federal government aid in the construction of roads and canals to improve transportation to and from the west b.the united states should end slavery. c.the united states should increasing the size of the navy and invade central america. d. the united states should annex hawaii