Final answer:
The Panama Canal played a crucial role in facilitating global trade and military operations. Remember the Maine! slogan fueled public support for the Spanish-American War and imperialism. The Big Stick Policy demonstrated America's imperial ambitions, and the Zimmerman Telegram influenced the US's entry into WW1.
Step-by-step explanation:
Panama Canal
The Panama Canal was a vital waterway that connected the Atlantic and Pacific Oceans, cutting travel time and costs for ships. Its importance to imperialism and WW1 lies in the fact that it allowed for easier movement of military and commercial vessels, enhancing global trade and military capabilities.
Remember the Maine!
Remember the Maine! was a slogan coined after the sinking of the USS Maine in Havana Harbor in 1898. It was used as a rallying cry to whip up public support for the Spanish-American War and the subsequent acquisition of overseas territories, thus fueling imperialism.
Big Stick Policy
The Big Stick Policy, introduced by Theodore Roosevelt, emphasized the use of military force to protect American interests in the Western Hemisphere. It showcased America's imperialist ambitions and its willingness to use military power to back up diplomatic negotiations.
Zimmerman Telegram
The Zimmerman Telegram was a secret message sent by Germany to Mexico during WW1, proposing a military alliance against the United States. The interception of this telegram greatly influenced public opinion in the US, leading to its entry into the war against Germany and its allies.