Answer:
Hitler's invasion of Poland is what set off the spark that ignited the war (European countries declared war on Germany, Germany and it's allies declared war on other European countries, and so on).
Explanation:
With respect to its colonies, British mercantilism meant that the government and the merchants became partners with the goal of increasing political power and private wealth, to the exclusion of other empires.
I think its b because people usually say "I plead the fifth"
B) abolitionists i’m pretty sure :D