How did the treaty of Guadalupe Hidalgo help to achieve the idea of manifest destiny

Which of the following could affect the human population? a hurricane makes landfall on an uninhabited island.a deadly virus emerges that can pass from human to human.a civil war breaks out in italy.a solar eclipse occurs.

How did the united states surprise other delegates at the washington naval conference in 1921?

What country was the philippines declaring independence from in this proclamation?