Globalisation has accelerated due to developments in transport, technology, and trade. In the 19th century, innovations like railways and steamships expanded trade. In the 20th century, jet aircraft and container ships further increased the flow of goods. The 21st century has seen the rapid growth of ICT, mobile phones, the internet, and social media, compressing time and space and connecting people globally. These developments have contributed to an increasingly interconnected world and a "shrinking" of distances between places.