Cpt. alfred thayer mahan influenced the u. s. to

D:  build-up their Navy and become involved in world affairs.

Explanation:

His books on the importance on sea power in throughout history was instrumental in convincing the U.S. to spend more money in order to build-up their Navy and become involved in world affairs. Within the decade, the US would be involved in conflicts in Cuba and the Philippines.

just because

explanation:

idk

gaius cassius longinus and marcus junius brutus, former enemies of julius caesar who'd joined the roman senate, led caesar's assassination, dubbing themselves "the liberators." and the second one is   the assassination of julius caesar was the result of a conspiracy by many roman senators led by gaius cassius longinus, decimus junius brutus albinus, and marcus junius brutus. they stabbed caesar (23 times) to death in a location adjacent to the theatre of pompey on the ides of march 15 march 44 bc.