C. Benjamin Franklin's practical inventions designed to make life safer and easier please mark me as the brainlyest answer if I'm correct
If the President, VP and Speak of the House die, the President Pro Tempore of the Senate will preside as the new President of the United States.
Answer: Gunboat Diplomacy.
Explanation: This is when a nation uses the threat of force or conspicuous displays of firepower to have influence in foreign policy, and it's called "Gunboat Diplomacy". The president Roosevelt used this tactic as a way to secure Panama's independence from Colombia; in a way of exchange the United States was able to secure access to what would become the Panama Canal.
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