Accounting for 4.24% of the global population, Americans collectively possess 29.4% of the world's total wealth, and Americans make up roughly half of the world's population of millionaires. The Global Food Security Index ranked the U.S. number one for food affordability and overall food security in March 2013. Americans on average have more than twice as much living space per dwelling and per person as European Union residents, and more than every EU nation. For 2017 the United Nations Development Programme ranked the United States 13th among 189 countries in its Human Development Index and 25th among 151 countries in its inequality-adjusted HDI (IHDI).
American forces in Iraq were withdrawn in large numbers in 2009 and 2010, and the war in the region was declared formally over in December 2011. But months earlier, Operation Neptune Spear led to the death of the leader of Al-Qaeda in Pakistan. In the presidential election of 2016, Republican Donald Trump was elected as the 45th president of the United States. On January 20, 2020, the first case of COVID-19 in the United States was confirmed. As of August 2020, the United States has over 5.5 million COVID-19 cases and over 170,000 deaths. The United States is, by far, the country with the most cases of COVID-19 since April 11, 2020.
More InfoThe United States, with its large size and geographic variety, includes most climate types. To the east of the 100th meridian, the climate ranges from humid continental in the north to humid subtropical in the south. The Great Plains west of the 100th meridian are semi-arid. Much of the Western mountains have an alpine climate. The climate is arid in the Great Basin, desert in the Southwest, Mediterranean in coastal California, and oceanic in coastal Oregon and Washington and southern Alaska. Most of Alaska is subarctic or polar. Hawaii and the southern tip of Florida are tropical, as well as its territories in the Caribbean and the Pacific. States bordering the Gulf of Mexico are prone to hurricanes, and most of the world's tornadoes occur in the country, mainly in Tornado Alley areas in the Midwest and South. Overall, the United States has the world's most violent weather, receiving more high-impact extreme weather incidents than any other country in the world.
More InfoThe U.S. Census Bureau officially estimated the country's population to be 328,239,523 as of July 1, 2019. In addition, the Census Bureau provides a continuously updated U.S. Population Clock that approximates the latest population of the 50 states and District of Columbia based on the Bureau's most recent demographic trends. According to the clock, on May 23, 2020, the U.S. population exceeded 329 million residents, with a net gain of one person every 19 seconds, or about 4,547 people per day. The United States is the third most populous nation in the world, after China and India. In 2018 the median age of the United States population was 38.1 years.
More InfoThe United States has a "Special Relationship" with the United Kingdom and strong ties with India, Canada, Australia, New Zealand, the Philippines, Japan, South Korea, Israel, and several European Union countries, including France, Italy, Germany, Spain and Poland. It works closely with fellow NATO members on military and security issues and with its neighbors through the Organization of American States and free trade agreements such as the trilateral North American Free Trade Agreement with Canada and Mexico. Colombia is traditionally considered by the United States as its most loyal ally in South America.
More InfoAfter the Cold War, the conflict in the Middle East triggered a crisis in 1990, when Iraq under Saddam Hussein invaded and attempted to annex Kuwait, an ally of the United States. Fearing the instability would spread to other regions, President George H. W. Bush launched Operation Desert Shield, a defensive force buildup in Saudi Arabia, and Operation Desert Storm, in a staging titled the Gulf War; waged by coalition forces from 34 nations, led by the United States against Iraq ending in the expulsion of Iraqi forces from Kuwait and restoration of the monarchy.
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