Democratic vice presidential candidate Tim Kaine on his time in the US Senate: 'I spend time with a lot of Republican senators who, once they have made sure nobody is listening, will tell you how fantastic a senator Hillary Clinton was'
Former New York City Mayor Michael Bloomberg: 'I'm not here as a member of any party, or to endorse any party platform. I am here for one reason, to explain why I believe it is imperative that we elect Hillary Clinton as the next president'
US Vice President Joe Biden, speaking at DNC: 'Folks, you've all seen over the last 8 years what President Obama means to this country. He is the embodiment of honor, resolve and character, one of the finest presidents we've ever had'
Former Secretary of Defense Leon Panetta, speaking at DNC: 'I have worked alongside 9 presidents, Republican and Democrat, all experienced, all believing in the US role in world leadership, and I can tell you this: In this election, the only candidate for president who has the experience, temperament, and judgment to be commander-in-chief is Hillary Clinton'
Retired NASA astronaut and Navy captain Mark Kelly, speaking at DNC and introducing wife, former Rep. Gabby Giffords: 'If you want our legacy to be that we left our kids and grandkids a country with less gun violence, not more, then we need to make Hillary our president'
Erica Smegielski, daughter of principal killed in Sandy Hook shooting, speaking at DNC: 'What we need is to elect Hillary Clinton as the 45th president of the United States so that no other daughter has to say I would given every single day that I have left just for one more day with my mom'
Senate Minority Leader Harry Reid: 'Trump knew that hateful rhetoric and dangerous policies are the way to win in today's GOP. But that's not how you win in America. And that's not how America wins in the world'
The United States of America (USA), commonly referred to as the United States (U.S.) or America, is a federal republic composed of 50 states, the federal district of Washington, D.C., five major self-governing territories, and various possessions. The 48 contiguous states and federal district are in central North America between Canada and Mexico, with the state of Alaska in the northwestern part of North America and the state of Hawaii comprising an archipelago in the mid-Pacific. The territories are scattered about the Pacific Ocean and the Caribbean Sea. At 3.8 million square miles (9.8 million km2) and with over 320 million people, the U.S. is the world's third largest country by total area (and fourth largest by land area) and the third most populous. It is one of the world's most ethnically diverse and multicultural nations, the product of large-scale immigration from many other countries. The geography and climate are also extremely diverse, and the country is home to a wide variety of wildlife.
Paleo-Indians migrated from Asia to the North American mainland at least 15,000 years ago, with European colonization beginning in the 16th century. The United States emerged from 13 British colonies along the East Coast. Numerous disputes between Great Britain and the colonies led to the American Revolution, which began in 1775. On July 4, 1776, as the colonies were fighting Great Britain in the American Revolutionary War, delegates from the 13 colonies unanimously adopted the Declaration of Independence. The war ended in 1783 with recognition of the independence of the United States by the Kingdom of Great Britain, and was the first successful war of independence against a European colonial empire. The current constitution was adopted in 1788, after the Articles of Confederation, adopted in 1781, were felt to have provided inadequate federal powers. The first ten amendments, collectively named the Bill of Rights, were ratified in 1791 and designed to guarantee many fundamental civil liberties.
The United States embarked on a vigorous expansion across North America throughout the 19th century, displacing American Indian tribes, acquiring new territories, and gradually admitting new states until it spanned the continent by 1848. During the second half of the 19th century, the American Civil War led to the end of legal slavery in the country. By the end of that century, the United States extended into the Pacific Ocean, and its economy, driven in large part by the Industrial Revolution, began to soar. The Spanish–American War and World War I confirmed the country's status as a global military power. The United States emerged from World War II as a global superpower, the first country to develop nuclear weapons, the only country to use them in warfare, and a permanent member of the United Nations Security Council. The end of the Cold War and the dissolution of the Soviet Union in 1991 left the United States as the world's sole superpower.
The United States is a highly developed country, with the world's largest economy by nominal and real GDP. It leads the world in several measures of socioeconomic performance, including average wage, human development, per capita GDP, and productivity per person. While the U.S. economy is considered post-industrial, characterized by the dominance of services, the manufacturing sector remains the second largest in the world. Though its population is only 4.4% of the world total, the United States accounts for nearly a quarter of world GDP and almost a third of global military spending, making it the world's foremost military and economic power. The United States is a prominent political and cultural force internationally, and a leader in scientific research and technological innovations.