Answer:
The need for raw materials for the factories and increased food supplies for the growing population in urban centers had led to the growth of export economies around the world that had specialized in commercial extraction of natural resources and the production of food and industrial crops.
Because you could just sit in your trench and wait for the opponent to attack, at which point you could shoot him, throw explosive devices, or even use chemical weapons that weren't banned then.
Explanation:
I think they used the scientific method if this is wrong I'm very sorry I apologize I hope this helps :-)
D. the sinking of the British ocean liner, <em>Lusitania.</em>
When a German U-boat (submarine) sank the <em>Lusitania </em>in May, 1915, over 1,000 persons were killed, including more than 100 Americans. The passenger liner was targeted by the Germans because they suspected weapons were being shipped to Britain in the cargo hold of the ship.
As an example of American feeling after the <em>Lusitania </em>incident, consider the reaction of Gifford Pinchot. He had been the Chief of the US Forestry Service (from 1905 to 1910) , and was quoted in the New York Times in May, 1915, after he had just recently returned from Europe. He asserted that Americans on the<em> Lusitania</em> (along with other passengers) were killed because an autocratic military empire was trying to dominate nations that were self-governing. His characterization of German intentions would mirror how President Woodrow Wilson later called on the USA to enter the war to "make the world safe for democracy."
Led an rebellion due to a famine
Estasblished the ming dynasty
Defeated the Mongols
is the answers.
Just took that on Edge