The portuguese made detailed maps of the coast of africa as they searched for the sources of all of the following except: a. gold
b. slaves
c. ivory
d. silk

His is the name of the group in the house of representatives that, in 1947, began hearings to expose communist infiltration in american life. unfortunately, a good deal of the evidence they used was based on hearsay and conjecture, meaning innocent people were harmed by their findings.