Plzz with this as soon as possible

1. SALT - Talks to discuss cuts in the nuclear arms race.

The SALT treaties (SALT I & SALT II) were talks between the U.S.S.R  & the U.S. on decreasing the amount of intercontinental nuclear missiles that each nation can own, however, it did not limit the amount for any other missile (those with shorter range).

2. Solidarity - The first free trade union in a Communist nation.

I am not very sure about this trade union, but using process of elimination, this would be the answer.

3.  Detente - French for "loosening".

Detente is "loosening", usually describing relationships and releasing strain on the relationship.

4. Perestroika - Russian for "restructuring".

Perestroika is used to describe the restructuring of the former USSR nations, as well as the governmental body of Russia as a whole.

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in the 1800s, chinese workers migrated to the united states, first to work in the gold mines, but also to take agricultural jobs, and factory work, especially in the garment industry. chinese immigrants were particularly instrumental in building railroads in the american west, and as chinese laborers grew successful in the united states, a number of them became entrepreneurs in their own right. as the numbers of chinese laborers increased, so did the strength of anti-chinese sentiment among other workers in the american economy. this finally resulted in legislation that aimed to limit future immigration of chinese workers to the united states, and threatened to sour diplomatic relations between the united states and china.