Who can recommend me a good study app/site for the us history air test

The christians in jerusalem met in the catacombs for their worship service

The holocaust of world war ii resulted in a) the nazis effectively used propaganda to gain and hold power in germany. b) ethnic regimes carried out mass devastation. c) deporting all european jews to the island of madagascar. d) the systematic mass slaughter of european jews and and others in nazi concentration camps during world war ii.

What was the earliest settlement shown on the map?