I believe it is the last and second one.
Answer: a. it suggested that the soviet union might have the capability to launch missiles at American cities.
Context: The Sputnik satellite was sent into orbit by the USSR on October 4, 1957. The Soviets announced its mission as a scientific one, to study the solar system. In the Cold War atmosphere, of course, Americans were wary of what other motives the USSR might have had. The Soviets launched Sputnik 2 in November, 1957, with a dog on board. The USA scrambled to get its own satellite program operational, launching the first US satellite, Explorer, on January 1, 1958.
The republicans win a decisive victory over the federalists
The idea for the removal of Native Americans was first brought up by Thomas Jefferson, who wanted the natives to willingly leave the colonies. The act gave Jackson the authority to offer the native nation's land west of the Mississippi in exchange for their eastern lands. It also provided money for the law to be carried out. When some tribes refused to sign the treaties, they used physical force to remove them, hence the Trail of Tears.
