Bacterial pneumonia Bacterial pneumonia is a lung infection caused by bacteria, and causes a cough, fever, weakness and more. Contact dermatitis Contact dermatitis is a rash on the skin that can be itchy, painful, tender swollen and even blistered. Fever seizures in children Fever seizures, childhood seizures that occur with a fever, can cause loss of consciousness and twitching.
Why is the United States the worldâs most powerful country? The United States is the worldâs only superpower, dominating the worldâs economic and political systems. With the strongest military and economy, the United States is capable of global power projection, giving it significant influence worldwide. Few countries dare to oppose Americaâs political agenda.
United States Declares War. At the beginning of the 20th century the United States was the most powerful country in the world. The world leader in coal and steel production, the USA was also a major producer of raw materials. The most important of these being wheat, cotton and oil, which accounted for more than a third of all the USA's exports.