1899, the United States declared the Open Door Policy. The Americans worried that other nations would soon divide China into formal colonies and shut out the American traders. They proposed that China's doors be open to merchants of all nations.
The Zimmerman Note was a note sent from Germany to Mexico asking Mexico to align itself with German interests. If the US entered the war and if Mexico opposed the US, the reward would be Arizona California and one other state -- perhaps Texas. It was a major contributor to the declaration of war on Germany by America.
The sinking of the Lusitania was another major event. When the Lusitania was sunk, 2000 people were affected.
Submarine warfare really aggravated the US. Many merchant ships were sunk.
Answer: B
Answer:
The Great Plains has good farmland, As the land there is highly fertile & high in humus content.
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The flooding of the Nile was so important to the Egyptian civilization because the thick rich mud was excellent soil. This made it great for them because they could plant seeds in it and grow crops.
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