United Airlines' Basic Economy passengers are allowed to bring one personal item on board, such as a purse or small backpack, that must fit under the seat in front of them. However, they are not permitted to bring a full-sized carry-on bag into the cabin unless they are a MileagePlus Premier member, primary cardmember of a qualifying MileagePlus credit card, or Star Alliance Gold member. If Basic Economy passengers bring a full-sized carry-on bag to the gate, it will be checked and a fee will be charged. **

A groin vault is formed by the intersection of two barrel vaults at right angles, creating a cross or X-shaped pattern at the top. It is a continuous surface without any visible ribs or supports. On the other hand, a ribbed vault is formed by a series of interconnected arches or ribs, which divide the ceiling into a grid-like pattern. These ribs provide additional support and decoration to the vault, and are often used to create more complex and decorative designs. **

The United Kingdom is still technically united, as it consists of four constituent countries: England, Scotland, Wales, and Northern Ireland. However, there have been growing tensions and calls for independence in Scotland and Northern Ireland in recent years. The Brexit vote also highlighted divisions within the UK, with Scotland and Northern Ireland voting to remain in the EU while England and Wales voted to leave. The issue of unity within the UK remains a topic of debate and concern. **

No, a fingerprint is the unique pattern of ridges and valleys on the surface of a person's fingertip, which is used for identification purposes. On the other hand, a genetic fingerprint refers to a person's unique genetic profile, which is determined by analyzing their DNA. While both types of fingerprints can be used for identification, they are distinct in terms of the information they provide and the methods used to analyze them. **

OG vault refers to a collection of classic or original skateboarding tricks that were popularized in the early days of the sport. These tricks are considered foundational and iconic within the skateboarding community, and are often seen as a representation of the history and culture of skateboarding. The term "OG" stands for "original gangster," and is used to denote something that is old-school, authentic, or traditional. Therefore, an OG vault is a collection of classic skateboarding tricks that have stood the test of time and continue to be respected and celebrated within the skateboarding community. **

No, the United Kingdom is not a federal state. It is a unitary state, meaning that the power is concentrated in the central government in London. The UK is made up of four countries - England, Scotland, Wales, and Northern Ireland - each with its own devolved government, but these governments do not have the same level of power as states in a federal system. **

The ECB can contain inflation through a restrictive monetary policy by increasing interest rates. Higher interest rates make borrowing more expensive, which can reduce consumer spending and investment, ultimately slowing down economic growth and inflation. Additionally, the ECB can reduce the money supply by selling government securities, which can also help to curb inflationary pressures. By implementing these measures, the ECB can effectively control inflation and maintain price stability in the economy. **

The Vault of Glass is a raid in the video game Destiny, developed by Bungie. It is a challenging, six-player cooperative activity that takes place on Venus and involves navigating through a complex maze-like structure filled with powerful enemies and puzzles. The raid culminates in a battle against Atheon, a powerful boss enemy. The Vault of Glass is known for its intricate design, teamwork requirements, and unique mechanics, making it a memorable and iconic experience for Destiny players. **