Confucianism is the philosophy developed by the Chinese philosopher Confucius. His philosophy was all about how to treat people socially, and placed an emphasis on respect and manners.
The note revealed a plan to renew unrestricted submarine warfare and to form an alliance with Mexico and Japan if the United States declared war on Germany. The message was intercepted by the British and passed on to the United States; its publication caused outrage and contributed to the U.S. entry into World War I.
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