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1420 • Henry V of England enters Paris.

1640 • Portugal regains independence after 60 years of Spanish rule

1824 • US House of Representatives begins to decide outcome of election deadlock between John Quincy Adams and Andrew Jackson (Adams wins)

1903 • "The Great Train Robbery", the 1st Western film, released.

1934 • Leningrad mayor Sergey Kirov assassinated, Stalin uses as excuse to begin the Great Purge of 1934-38.

1946 • Australia compile 645 v India at the Gabba (Bradman 187).

1947 • India cricket all out for 58 v Australia at the Gabba, Toshack 5-2.

1953 • Hugh Hefner publishes 1st edition of Playboy magazine, featuring Marilyn Monroe as the magazine's 1st centrefold.

1957 • Sam Cooke, Buddy Holly and the Crickets debut on Ed Sullivan Show.

1959 • The 1st color photograph of Earth received from outer space.

1959 • 12 nations sign treaty for scientific peaceful use of Antarctica.

1988 • Benazir Bhutto named 1st female Prime Minister of a Muslim country (Pakistan).

1991 • U.S. 75th manned space mission "STS-44" Atlantis 10 lands.

1993 • Northwest Airlink plane crashes in Minn, killing 18.

1992 • 2 C-141B Starlifters collide in Montana and crash, 13 die.

2014 • The U.N. World Food Program stops assistance to over 1.7 million Syrian refugees in the nations adjoining Syria; the program has provided over $800 million in aid but lacks funds to continue this support.

ang of Chechen separatist rebels enters a school in southern Russia and takes more than 1,000 people hostage including children and their families on the first day of the new school year. During the siege that followed more than 330 died, most of them being children.

What How Why

What is a leap Year?

It takes the Earth 365 days and six hours to orbit around the Sun. The Six extra hours cannot be counted on the calander. So, to keep an accurate count, an extra day is added at the end of february every four years.

What How Why

What are the most precious stones?

When the magma cools, the material which it contains solidifies in the form of crystals. Precious stones are crystals with particular characteristics of colour, hardness and the way they can reflect the light. They are used in making jewellery.

What How Why

How is the height of a mountain measured?

To measure the height of mountain, the surface of the sea is taken as the point of reference. The height of the mountain is the distance between the top of the mountain and the surface of the sea.

What How Why

What is an electric current?

An electric current is a passage of electrons from one electrified body to another which is less charged. When too many electrons are generated, they can move.

What How Why

Why does iron go rusty?

Rust forms on the surface of iron objects when they are exposed to the air. It is the product of a chemical reaction called oxidization. The more the object is exposed to the air, the more rapidly rust spreads.

What How Why

How fast can a dog run?

A Greyhound can run at a speed of 64km per hour, a Weimaraner , once used for hunting wolves and wild boar, can reach speed of up to 56 km per hour in a chase. Many breeds of dog which were once bred for hunting are now more common as pets than hunting Dogs.