Explanation

 Closed System:

In a closed system, social status is largely determined at birth and individuals have limited or no ability to move up or down the social hierarchy. 

Examples of Closed Systems:

Traditional caste systems and feudal estate systems are examples of closed systems where social mobility is severely restricted

Explanation

 The world's first public airline was DELAG (Deutsche Luftschiffahrts-Aktiengesellschaft),

It was founded on November 16, 1909, with government support

Its headquarters is in Frankfurt

DELAG, meaning "German Airship Navigation Company,"

Explanation

 Australia's national tree is the Golden Wattle ( Acacia pycnantha). 

Australia Capital is Canberra.

Australia Currency is Australian Dollar.

Australia official language is English.

Australia national game is Cricket.

Australia located is in Continent Oceania.

Australia Primary Religion is Christianity (But Secular Country).

Australia Head of Govt. is Prime Minister  - Anthony Albanese.

Australia Parliament called Federal Parliament.

Australia flas has three colours.

Explanation

Almost 40% of the world's oil supply passes through the Strait of Hormuz. 

  The Strait of Hormuz is 55 to 95 Km wide Strait.

It is located between the Persian Gulf and Oman Gulf.

Explanation

The Sui gas field is the biggest natural gas field in Pakistan.

It is located near Sui in Balochistan.

The gas field was discovered in late 1952 and the commercial exploitation of the field began in 1955.

Explanation

The University of Veterinary and Animal Sciences (UVAS), formerly known as Lahore Veterinary College,

It is a public research university located in Lahore

 Established in 1882

Explanation

The largest stadium for athletics in Pakistan,

With a capacity of 48,700

,t is the Jinnah Sports Stadium in Islamabad. 

Explanation

The Peshwa dynasty of Marathas was founded by Balaji Vishwanath,

He was the father of Baji Rao I. 

He is considered the founder because his son, Baji Rao I, inherited the position of Peshwa after his death and expanded the Maratha empire. 

Explanation

Explanation

 Brüggen Glacier, also known as Pío XI Glacier named by Spanish explorers after a Pope,

It is located  in southern Chile

It is the largest western outflow from the Southern Patagonian Ice Field.

Now about 66 km (41 mi) in length,

iI is the longest glacier in the southern hemisphere outside Antarctica