It was the party of slavery
can you ask the question differently so h can try to understand what your asking:) sorry
The correct answer is most definitely: D. U.S leaders greatly expanded their efforts to promote advanced technology.
Indeed, Americans were convinced, after the end of WWII that they were the most technologically advanced and successful nation on earth in the course of human history. However, the Russian-led, Soviet Space Program completely destroyed that assumption. The Sputnik one as it is now known was the first artificial satellite of Earth in the history of humanity. The shock to the American public was massive and very strong. They had thought for years that because they developed the first nuclear bomb and had more nuclear power than the Soviet Union, they had the best technology. This event launched the space race as President Eisenhower discovered that the technology used to put this scientific satellite in orbit was military (an Intercontinental Ballistic Missile or ICBM had been used).
This meant that the technology could also be used for a successful and devastating nuclear strike against the USA. The Soviets kept winning the space race for years, sending the first animal to space, the first man, the first woman, etc. Eisenhower decided to create NASA a year later and President Kennedy challenged Americans to land on the moon in 10 years. It was only after Americans successfully landed on the moon that they got ahead on the space race.
In common usage, the term "cold war" refers to a war that consists of indirect conflict rather than direct conflict. Basically, a war with casualties but no battles or armed fighting.
The answer is (D), all of the above.
Earlier, people lived in cramped spaces, so the prospect of land in the west was appealing to them.
The discovery of gold in California resulted in a lot of settlers moving west, as well, to search for a fortune.
Finally, many traveled west to start a new life out in the spaces where no one had claimed anything yet.