Which is the best example of a secondary source document useful in the study of history?
a) a letter from a relative of a participant in a battle or campaign
b) a newspaper article written the day after an event occurred
c) an academic analysis of key battlefield strategies
d) an officer's listing of military personnel killed in battle

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.

Soon-yi's house has a hexagonal window made up of six identical equilateral triangles as pictured below.

During the era of european expansion, what was the biggest reason for spain’s push for exploration?