1377 The coronation of King Richard Ⅱof England took place

·1377 The coronation of King Richard Ⅱof England took place.
英格兰国王理查二世加冕。

·1867 Reinforced concrete was patented by Joseph Monier of Paris.
巴黎人约瑟夫·莫尼耶获得钢筋混凝土的专利权。

·1918 The last Tsar, Nicholas Ⅱ, was murdered with his 5 children.
俄国末代皇尼古拉二世以及他的5个孩子被谋杀。