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
Decline and modernization of the Ottoman Empire Council of Public Instruction (1845) and the Ministry of Education ("Mekatib-i Umumiye Nezareti", 1847, which later became the "Maarif Nezareti", 1857); the abolition of slavery and slave trade (1847); the establishment of the first modern universities ("darülfünun", 1848), academies (1848) and teacher schools ("darülmuallimin", 1848); The Ottoman Ministry of Post was established in Istanbul on 23 October 1840. The first post office was the "Postahane-i Amire" near the courtyard of the Yeni Mosque. Samuel Morse received his first ever patent for the telegraph in 1847, at the old Beylerbeyi Palace (the present Beylerbeyi Palace was built in 1861–1865 on the