Which of the following did garrett morgan invent?
a.) the telephone
b.) the traffic light
c.) the automobile
d.) the airplane

Option (B)

Explanation:

Garrett Morgan was an African-American inventor who made many new inventions, one of which is the traffic light that is commonly used in today's world. He was also a businessman and a good political leader.

He noticed that all the vehicles, including the cycles, pedestrians had to use to the same road, as a result of which numerous accidents have taken place. So, in order to control and reduce the number of accidents he came up with this idea of the traffic light, which was successful in controlling the number of road accidents. This is how the traffic light system was invented.

Thus, the correct answer is option (B).

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.