4. -
What factors helped the Spanish defeat the Aztec and Inca Empires?
A. the Spanish introduced diseases, had a C. the Spanish treated the native populations
superior military, better technology in with kindness and provided them with
weapons, and were cruel towards their shelter, supplies, and the opportunity to
treatment of natives
convert to Christianity
B. the Spanish only wanted to collect gold
and silver, they did not feel the need to
harass or control the native tribes
D. the Spanish introduced a great plague and
other diseases on purpose to easily kill off
the native tribes

an effect of the steamboat's popularity was that people began building canals in the united states and europe. this was done to find another way to transport goods across the country and in that time, transportation using the river was very slow and dangerous. it depended entirely on manpower and the current of the river. that all changed in the late 1700's when steamboats were introduced. they soon revolutionized travel and trade through the river and dominated the waterways. eventually, other means of transportation took over from the steamboats, but there was a time that they the united states to expand to the west.

the answer wold be b) travel among nations should be regulated by an international organization

i honesty don't know, good luck tho dawg