1. 1950 Korean war begins.
2.1954 First nuclear powered submarine launches: USS Nautilus
3. 1958 NASA is formed
4. 1961 JFK becomes president
<span>5. 1963 John F. Kennedy killed in Dallas
Hope this helps! :)</span>
He accomplished many things such as becoming a renound politician before becoming president.
emphasis on individual growth and achievement
significance of human thought and experience
and
interest in classical greek and roman texts.
Answer: The construction of trenches made it hard for either side to advance.
Explanation:
The statement that explains the reason why the western front turned into a stalemate during World War I is that the construction of trenches made it hard for either side to advance.
During World War 1, trench warfare was vastly used as it gives the soldiers protection from enemies. Soldiers were unable to cross the area that was between the trenches as the land was mined territory and also they were was subjected to gunfire, and artillery.
Increase in employment opportunities
