One invention and change of communication that changed the life of many Americans is the cellphone. The telephone has allowed many people to get in contact in the matter of seconds. The cellphone allowed many people to contact people all over the world. The cellphone also introduced texting later on in its years which a lot of people use every day. The cellphone will keep evolving and have many positive and negative impacts on the life of Americans.
Many people opposed the idea. They believed that a national bank was unconstitutional and would place too much power in the hands of the federal government. Despite the opposition, Hamilton prevailed, and Congress created the Bank of the United States (often called the First Bank), granting it a 20-year charter.
Unrestricted submarine warfare clearly marks the United States shift from isolationism to interventionism. The US had several different involvements with the German who used unrestricted submarine warfare against either US citizens or the US military. For example, the Germans sunk the Lusitania, a British ship that contained American citizens. In this attack, over 100 American citizens were killed. This caused outrage among American citizens.
Tensions with Mexico is not a useful mark to show America's shift away from isolationism. The tensions between these two were only escalated due to the Zimmerman Telegram, which the Mexican government never technically received. Instead, the tensions lie more with the German government (who were responsible for sending this message).
It is estimated that 50,000 slaves fled their masters over the course
of the Revolutionary War. The war lasted from 1775 to 1783.