Answer:
The correct answer is letter B.
Explanation:
The Spanish-American war ended in 1898 with the winning of the US army.
The winning made Spanish army give up some territories, such as Cuba, Guam, Puerto Rico and Philippines. In that time the United States made the independence the state of Hawaii.
This made US establish a predominance in Caribbean region and following the strategic economic steps in Asia.
The five Southern Colonies of Colonial America composed of Maryland, Virginia, North Carolina, South Carolina and Georgia. A comprehensive list of the key events which are important to the Southern Colonies Timeline. The first colony was founded at Jamestown, Virginia.
Global warming "<span>B. threatens polar ecosystems". All the other answers are false, especially answer A. There is a lot that can be done to stop global warming, such as reducing energy consumption.</span>
Germany, Austria-Hungary, Bulgaria, and the Ottoman Empire