In the late 1800s and early 1900s, several Chinatowns had violent riots that were started by A)nativists who disliked immigrants.
B)immigrants who were denied rights.
C)workers who were unemployed.
D)city workers who were not being paid.

This is what i found on google “the first mobile phone call was made 40 years ago today. on april 3, 1973, motorola employee martin cooper stood in midtown manhattan and placed a call to the headquarters of bell labs in new jersey.” i hope this you for what your looking.