Question

by gaining possessions and influence in asia and the americas during the spanish - american war, the united states
threatened british power around the world.
forced china and japan to open their ports to trade.
helped spain keep its power in europe.
became a worldwide power with an extended empire.

Explanation:

• For option 1: The Spanish - American War was mainly about the U.S. and Spain. There was no direct threat to British power on a global scale from this war in terms of possession - gaining in Asia and Americas as described.
• For option 2: China and Japan had already started to open ports to trade before the Spanish - American War. For example, Japan's opening was due to events like Commodore Perry's visit in the 1850s.
• For option 3: The U.S. fought against Spain in the Spanish - American War. The result was Spain losing its colonies (like Puerto Rico, Guam, Philippines) rather than keeping power.
• For option 4: After the Spanish - American War, the U.S. acquired territories such as Puerto Rico, Guam, and the Philippines. This expansion of territory and influence made the U.S. a worldwide power with an extended empire.

Answer:

became a worldwide power with an extended empire.