提高聽力同時，你還可以了解到美國歷史上的一些重要事件。請感興趣的你一聽為快吧！

<注意>
hints：the Articles of Confederation
In 1783, the 13 colonies became the United States. Before the war ended, the colonies had developed the Articles of Confederation, a plan to work together as one nation, but the connections among the 13 states were loose. Each state had its own money, army, and navy. Each state traded and worked directly with other countries. Each state collected taxes in its own way. Each state believed its way was the right way. It was a nation of 13 countries.
在1783年，13個殖民地成為美國。在戰(zhàn)爭結(jié)束之前，殖民地制定了聯(lián)邦條約，最為一個國家團結(jié)起來的計劃，但是在13個周志堅聯(lián)系變得松散。每個周都有它自己的錢，軍隊，和海軍。每個州直接與其他國家交易和合作。每個州以它自己的方式收稅。每個周認(rèn)為它們的方式是正確的方式。美國是13個州的國家。