In 1917, Germany, determined to win its war of attrition against the Allies, announced the resumption of unrestricted warfare in war-zone waters. Three days later, the United States broke diplomatic relations with Germany, and just hours after that the American liner Housatonic was sunk by a German U-boat.
Answer:
For an amendment to be made, two-thirds of the members of each house of Congress must approve it, and three-fourths of the states must ratify it. Congress decides whether the ratification will be by state legislatures or by popularly elected conventions in the several states (though in only one instance, that of the Twenty-First Amendment, which repealed prohibition, was the convention system used). In many U.S. states, proposed amendments to a state constitution must be approved by the voters in a popular referendum.
The climate was an important cause<span> of the </span>dust bowl<span>. The climate of the Great Plain's region is dry and windy; winds reached the speed of 60 mph. Scientists believed that drought which </span>caused the dust bowl<span> to take place occurred because it happened same time as La Nina event in the Pacific Ocean.</span>
