Maryland was established by Calvert brothers as a refuge for Roman Catholics prosecuted in England.

The Bill of Rights established the rights of citizens. It is also called as Declaration of rights or Charter of rights. It is a list of most important rights to the citizens of a country.

Tyres that are used in an Aircraft for landing are tubeless tyres.

A star is a self luminous astronomical object and shines due to internal radiation from the enrgy sources. All stars are held together by their own gravity called Gravitational force.

A grouping of stars that resembles a picture i.e, forms an imaginary outline or pattern typically representing an animal, mythological person or creature, a god, or an inanimate object is called a constellation. The night sky is divided into 88 sections called constellations.

Capitalism is an economic system in which private individuals or businesses own capital goods i.e, economy is characterized by private ownership of the means of production. The production of goods and services is based on supply and demand in the general market known as a market economy and not on central planning known as a planned economy.

Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel. By default, a Linux user falls under same as userid (UPG) group.

The United Nations is an intergovernmental organization tasked with maintaining international peace and security, developing friendly relations among nations, achieving international co-operation, and being a centre for harmonizing the actions of nations. It was established in the year 1945 on October 24th. Its headquarters are in NewYork, US. India is one of the founder countries along with US, Venezuela, Australia, Brazil, Canada, UK, France, etc... in 1945 before Independence itself.