The completion of the first transcontinental railroad in 1869 encouraged settlement of the American west by proving easier travel and it took less time.
The strategies that the allies used to win during World War
II were to create a force to defeat the AXIS powers. The allied forces also use
submarines as their new tactic. They build more ships to destroy the Germans.
Also bombings in Germany were a lot and the death toll is rising in the year 1942
and during this time the city of Dresden in Germany was devastated.
Explanation:
For millennia, ethnic and religious hatred drove refugee migrations. The Korean War (1950–53), the Hungarian Revolutionary (1956), the Cuban Revolutionary (1959), and the Chinese conquest of Tibet (1959) all led in the departure of over a million refugees throughout the 1950s.
Interchangeable parts were first used by Eli Whitney in the cotton gin in 1798