The correct answer is - oil.
The Japanese Empire, under the rule of Emperor Hirohito, in order to manage to continue with the expansion and gain new territories, needed much more oil than what its supplies where.
The need for oil meant that Japan will attack the places in the region where there are solid amounts of oil reserves, and they did. They attacked and conquered parts of Southeast Asia, and got hold onto the large oil reserves that they desperately needed for their military machinery.
Causes of the Revolutionary War
The American people were strongly independent. They wanted to do things for themselves. Great Britain was a long way away. The American people didn't want people an ocean away telling them how to live their lives.
The British government decided to make the American colonies pay a large share of the war debt from the French and Indian War.
Through the Sugar Act, Stamp Act, and other taxes, the British tried to collect taxes that the American people considered harsh.
The American people also thought that they should be able to send their own people to Britain's Parliament or at least vote for Britain's lawmakers.
The combination of the harsh taxes and the lack of an American voice in Parliament gave rise to the famous phrase "taxation without representation."
Patrick Henry, Thomas Paine, and others called for an independent America, colonies free from British rule and interference.
Americans started stockpiling guns and ammunition in violation of British laws. Their defense of such a stockpile led to the shots fired at Lexington and Concord and the beginning of the Revolutionary War.
A - The Confederates relentlessy attacked the fort.
On April 12, 1861 the Confederates bombarded Fort Sumter for 34 hours before Union forces agreed to evacuate. There were no fatalities on either side.
By a war of both of the systems
Its called Passive resistence
