Metamorphic Rock Facts. Enjoy our metamorphic rock facts for kids. Find interesting information and a range of examples that help explain what metamorphic rocks are and what makes them different from other kinds of rocks. Metamorphic rocks have been changed over time by extreme pressure and heat.
American Airlines (AA) is a founding member of oneworld. American and its affiliates operate from major hubs across the USA, including Charlotte, Chicago, Dallas/Fort Worth, Los Angeles, Miami, New York, Philadelphia, Phoenix and Washington DC, to more than 330 destinations in 50 countries. British Airways.
Generally speaking, the best reward and mileage accounts are found in the US; and that's where you'll find the best alliance accounts as well. You ideally want to open up one frequent flyer account per alliance with these airlines.1  Star Alliance: United Mileage Plus. 2  Oneworld: American Airlines AAdvantage (even now, despite the recent bankruptcy deceleration). 3  SkyTeam: KLM Flying Blue (or Delta Skymiles).unnel Your Miles To One Airline Per Alliance. Most major airlines belong to one of the three large airline alliances; Star Alliance (United, Lufthansa, Singapore Airlines, plus 25 others), Oneworld (American Airlines, British Airways, Qantas, plus 12 more), and SkyTeam (Delta, Alitalia, KLM, plus 12 others).