Susan Brownell Anthony died in 1906 at the age of 86. She was elected to the American Hall of Fame in 1950. She was the first American woman to have a likeness (肖像) of her face on a coin. It was the 1979 Susan Brownell Anthony dollar. ...
Bitcoin, launched in 2009 on the bitcoin blockchain, was the first cryptocurrency and popular application to successfully use blockchain. As a result, blockchain has been most often associated with bitcoin and alternatives such as dogecoin and bitcoin cash, both of which use their own public ...
The segmented markets theory was introduced by American economist John Mathew Culbertson in a 1957 paper called The Term Structure of Interest Rates. In this paper, which is basically arguing against the idea of term structure, Culbertson argues against Irving Fisher's idea of term structure -- ...
Celebrating America: Identify significant American symbols, landmarks, and monuments. Learn about the history and significance of icons like the Statue of Liberty and the White House. Exploring Economics: Understand the concept of scarcity and making choices. Recognize the importance of natural resou...
Susan: Yes, and it was made in Thailand. I’ll give it to my best friend for her birthday. Anita: Oh, I’m sure she’ll love it. 录音原文 Nick: Hey Marcus, have you heard about the art and science fair?...
The Grand Canal is the world's longest man-made river, running from Beijing in the north to Hangzhou in the south. It is one of the most magnificent projects in Chinese history. First built in the 4th century B.C., the Grand Canal was completed in the late 13th century A.D.. Origin...
Their message is central to what it means to grow up "American." 体育运动无处不在,从学校开始; Sports are pervasive, starting in schools; 首先是“小联盟”,然后是全国性的体育比赛,现在是一个主要的娱乐产业。 first through "little leagues" and on to the national sports ...
Teams like the White Sox and Marlins were given virtually no chance of playing in October before even a single pitch was thrown this year. We imagine a way that hope -- for all 30 clubs -- could stay alive the whole season.Mahoney Studio ...
Gold: Gold must be 99.5% pure for use in your IRA, with the exception of the American Eagle coin, which has a purity requirement of 91.67%. Silver: Silver has the highest purity standard, with a required purity of 99.9%. Platinum: Platinum has to be 99.95% pure to be eligible for a...
Made public in 2009, Bitcoin is the most widely traded and valuable cryptocurrency. The success of Bitcoin has led to the rise of many other cryptocurrencies. Ethereum (ETH): Released in 2015, Ethereum is a blockchain platform that developed its own coin. Popular for financial transactions, ...