1873
Levi Strauss and Jacob Davis were granted a U.S. patent for jeans reinforced with copper rivets, marking the beginning of modern denim wear.
1882
The Triple Alliance was formed between Germany,...
World Malaria Day, observed every year on 25 April, is a global health awareness day established by the World Health Organization (WHO) to highlight...
The National Science Centre, Delhi, will mark World Earth Day 2026 on April 22 with a special programme dedicated to environmental awareness and scientific...