In May 1960, an American was shot down deep over Soviet territory. Immediately, President Eisenhower lied and explained that the wreckage was simply a that had gotten off track. The Soviet leader, , had proof that Eisenhower was lying because the Soviets had recovered . The incident drove a deep wedge between the two sides--which were scheduled to meet in Paris to discuss the possibility of a policy of .

The Soviet leader, "Nikita Sergeyevich Khrushchev". 

The Soviets had "captured and imprisoned the plane pilot".

To meet in Paris to discuss the possibility of a policy of "new agreements on nuclear arms production and testing".

Explanation:

An international political crisis erupted in May 1960, when the USSR blown out of the sky an American U-2 spy plane in Soviet airspace and arrested its pilot. President Dwight D. Eisenhower was forced to admit to the Soviets that the U.S. Central Intelligence Agency (CIA) had been flying spy missions over the USSR for several years, which he denied.

But the Soviet leader Nikita Sergeyevich Khrushchev had evidences including the captured plan pilot, so president Eisenhower couldn't deny it again.

A summit was meant to be held at Paris to discuss the possibility of a policy of new agreements on nuclear arms production and testing.

im not sure on this one

angel island immigration station was an immigration station located in san francisco bay which worked from 1910 to 1940. the majority of immigrants that got there were from the asian hemisphere, specifically from china, japan, russia, and south asia, being china the country from where more people arrived.

the number of foreigners arriving at it took the attention of americans who feared the new arrivals would take their jobs. the work opportunities were not abundant due to the economic comedown of 1870 and the asians, as newcomers, were willing to work for cheaper wages. soon they started to be seen as a threat, which led to an increased discrimination against the chinese - the biggest ethnicity arrived at this station until 1915 when japanese immigrants outnumbered them - being considered as unsuitable americans hence their looks and social situation.

at the station, the immigrant's detention may vary depending on how long the interrogation process took: it could be weeks, months, or even years.

finally, in 1940 an explosion destroyed administration building located on the island, so the united states government decided to stop the process.