During Congressional Reconstruction, who controlled state governments in the South? A) Confederate leaders who signed loyalty oaths
B) Mayors of major southern cities C)Washington D. C.
D) Union military governors and troops​

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.