Charles Benedict Calvert telegraph, Samuel Morse and Alfred Vail. On April 9, 1844, Morse and Vail successfully tested their device by transmitting a message from the nation's capital to the Calvert home, Riversdale. This test came 45 days before the more celebrated event when Morse sent the message "What hath God wrought?" from Washington to Baltimore, along telegraph lines that ran above the Baltimore and Ohio Railroad line near Riversdale. Calvert became president of the Prince George's County, Maryland Agricultural Society and the Maryland State Agricultural Society, and served as vice president of the United States Pomological Society. He founded the first agricultural
The warning verse son, accepted the message. This prompted Muhammad to declare him his heir. The warning verse The warning verse (Arabic:آیه الانذار ) is verse 214 of the Quran's 26th chapter, Ash-Shu'ara. According to Islamic tradition, it was revealed to Muhammad in the third year of his prophetic mission, and instructed him to encourage his relatives to convert to Islam. وَأَنذِرْ عَشِيرَتَكَ الْأَقْرَبِينَ And warn, O Muhammad, your closest kindred. The verse is mentioned in several ahadith. One hadith in Sahih Bukhari states that Muhammad called individuals from various clans of the Quraysh tribe to a mountain in Mecca, and informed them