The correct answer would be D) doubts about the value of it’s currency.
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That fact the Polk's message convinced Congress to vote to go to war with Mexico showed ow eager the United States was to gain territory, since this speech provided relatively no rational arguments in favor for war.
Germany was extremely divided in the period since it was not yet a unified country. This lack of centralism led to rampant corruption that always ended with church as a unified body having huge power over the separated individual regions. This allowed extreme corruption to prosper and the church was basically exploiting people. Martin Luther was sick of this and he used the newly developed idea of a printing press to spread his message in order to fight the Catholic church's corruption.