What do you think was the greatest empire in history? and why?

Explanation:

1) The British Empire was the largest empire the world has ever seen.

The British Empire covered 13.01 million square miles of land - more than 22% of the earth's landmass.The empire had 458 million people in 1938 — more than 20% of the world's population.

The British Empire began with overseas colonies and trading posts and in the end comprised dominions, protectorates, and mandates, as well.  

It was made up of 13 million square miles of land - more than 22% of the earth's land-mass. In 1922, the Empire had a population of 458 million people or about 20% the global population.

The financial burden of World War I was the beginning of the end for the British Empire.

Japan's occupation of its territories in the Second World War and the loss of India in 1947 brought the days of the British Empire to a close.

when world war i broke out across europe in 1914, president woodrow wilson proclaimed the united states would remain neutral, and many americans supported this policy of nonintervention. however, public opinion about neutrality started to change after the sinking of the british ocean liner lusitania by a german u-boat in 1915; almost 2,000 people perished, including 128 americans. along with news of the zimmerman telegram threatening an alliance between germany and mexico, wilson asked congress for a declaration of war against germany. the u.s. officially entered the conflict on april 6, 1917.