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wars
historical people
scientific achievements
100

the declaration of independents was signed on?

July 4,1776

100

What was the reason for the American revolution ?

 The imposition of British taxes on the colonies without their consent ("taxation without representation").

100

who was the first person  to wake on the moon 

Neil Armstrong 

 

100

what is E=MC2

 energy (E) and mass (m) are interchangeable, with the speed of light squared (c²) as the conversion factor. This means matter and energy are two forms of the same thing, and even a small amount of mass contains an enormous amount of potential energy.

200

when did world war 1 start 

July 28,1914 

200

who came up with 

E=MC2

Albert Einstein

200

who came up with the 3 laws of motion 

Issac Newton


300

who is the 16th president of the USA

A .Donald Trump

B.Abraham Lincoln

George Washington 

B.Abraham Lincoln

300

who invented the telescope 

Hans Lippershey

Zacharias Janssen

Leonard Digges

Galileo Galilei

all four of them had a role in the invention of the telescope 

400

who invented Wi-fi 

Hedy Lamarr. was an Austrian-American actress and inventor who pioneered the technology that would one day form the basis for today's WiFi, GPS, and Bluetooth communication systems.

500

first person in space 

Yuri Gagarin