China leads with 31.63% global manufacturing output worth nearly $5 trillion. United States ranks second with 15.9% share, producing $2.5 trillion. Japan follows with 6.5% share, generating $800 billion in 2022
Superpowers are dominant nations with global influence and power projection capabilities. Term first appeared after WWII with US and USSR dominating Cold War. US remains undisputed global superpower with $20.9 trillion GDP
Visitor visas allow temporary stays for business, tourism, or both. Permitted activities include business consultations, conventions, and medical treatment. Cannot work, study, or perform paid performances on visitor visas
US has 41,704 ZIP codes ranging from 00501 to 99950. ZIP codes are five-digit numbers for efficient mail handling. Each digit can be 0-9, totaling 100,000 possible codes
US phone numbers consist of area code, exchange code, and subscriber number. Area code identifies geographic region, typically 3 digits. Exchange code narrows down location within area code region. Subscriber number is 4-digit unique identifier for specific line
United States includes 48 states, Alaska, Hawaii, and five overseas territories. Borders Canada to north and Mexico to south. Total area is 9,826,675 km² (3,794,100 sq mi). Second largest Exclusive Economic Zone at 11,351,000 km²