What danger did a european nation face by entering into an alliance

Which of the following statements is true about germany's use of u-boats?

Why was the agricultural revolution more successful in england than in the rest of europe?

How did the catholic church change as a result of the council of trent? a. catholic printers were encouraged to publish translations of the bible in common languages b. members of the catholic clergy were required to avoid luxurious lifestyles c. catholics were told they could earn salvation through god’s grace alone d. european catholics were barred from initiating any conflict with protestants.