The tensions were between Great Britain and America because of trade issues. And the English claimed the right to search American vessels, seize anyone suspected of being a British subject and force them into the British military.
After WWII Europe was divided into a US-led Western Bloc and a Soviet-led Eastern Bloc. Internationally, alliances with the two blocs gradually shifted, with some nations trying to stay out of the Cold War through the Non-Aligned Movement.
Bidwell was very known for being an amazing pioneer, and was working for the House of Representatives. After, he ran for president, and yet failed. Therefor, I believe your answer would be C.