TED-Ed: How the world's longest underwater tunnel was built

The English Channel, a crucial maritime passage, posed significant challenges for crossing due to its rocky shores and stormy weather. In the 1800s, engineers proposed various designs, including an underwater tunnel. Despite technological advancements, political and economic obstacles delayed the project. By 1985, private funding enabled construction, leading to the creation of three tunnels. The project faced engineering challenges, such as water seepage and precise alignment. After 2.5 years, the tunnel was completed, becoming a major transportation route. However, it also became a site of conflict due to refugee attempts to enter Britain.

What was the significance of the year 1994 in relation to the Channel Tunnel?

What challenges do refugees face when attempting to enter Britain through the tunnel?

In what ways can the history of the Channel Tunnel serve as a reminder for humanity?