Joseph Aspdin
English businessman and cement inventor
English businessman and cement inventor
1788
237 years ago
Scientists & Innovators
United Kingdom
A significant figure in the history of construction, a businessman pioneered the development of Portland cement in the early 19th century. The invention, which involved heating limestone and clay in a kiln, allowed for stronger building materials that contributed to the modernization of construction techniques. This innovative cement became widely used, laying the groundwork for future advancements in concrete technology. The first patent for Portland cement was granted in 1824, which established a foundation for the cement industry.
Patented Portland cement in 1824
Established the modern cement industry
Born into the House of Orange-Nassau, this individual was a prominent figure in the 17th century. She married William II, Prince of Orange, and became the mother of William III of England. Her marriage fortified alliances within European nobility. Her influence extended through her children, particularly William III, who played a significant role in the Glorious Revolution in England. The life and legacy of this princess were intertwined with the political landscape of Europe during her time.
Continue ReadingGrand Duke of Lithuania from 1430 and King of Poland from 1440, the ruler reigned during a significant period of consolidation for the two crowns. Facilitated the union between Lithuania and Poland, which strengthened political alliances against external threats. His reign marked a time of relative peace and economic development, fostering trade and agriculture. The administration focused on improving the legal system and land governance.
Continue ReadingA radio host and producer, contributed significantly to the political landscape through early work in broadcasting. In 1972, became the first woman in the United States to receive an electoral vote for the presidency as a candidate for the Libertarian Party. This historic candidacy represented a notable shift in third-party politics at the time. Engaged in advocacy for civil liberties and individual rights, hosting programs that addressed various social issues. Actively participated in numerous radio shows, shaping public conversations around political engagement and personal freedom.
Continue ReadingRuled as the Emperor of Trebizond from 1349 until 1390. Oversaw a period marked by internal strife and external threats, particularly from the Ottoman Turks. Engaged in diplomatic efforts to strengthen the empire's position, including alliances with neighboring powers. His reign featured a blend of Byzantine traditions and local governance. The eventual decline of the empire was evident during his rule, with significant territorial losses occurring. Death occurred in 1390, leaving the empire in a vulnerable state.
Continue ReadingServed as the 13th General of The Salvation Army, leading the organization from 1993 until 1999. Worked towards the expansion of The Salvation Army's services worldwide and focused on social justice issues. Advocated for the homeless, marginalized communities, and various humanitarian efforts. Contributed to the growth of The Salvation Army in Australia and internationally, emphasizing the role of women in leadership within the organization.
Continue ReadingAscended to the throne as Holy Roman Emperor in 1612. Ruled during a turbulent period marked by religious conflict and political strife in the Empire. Advocated for a balance of power among the various territories within the realm. Managed relations with both Protestant and Catholic states. Established a court that highlighted art and culture, influencing the Baroque movement in Central Europe. Oversaw military conflicts, including the Thirty Years' War, which had profound effects on European politics and society.
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