What was the purposes of tanks in ww1?

Tanks were introduced in World War I to overcome the stalemate of trench warfare and to break through enemy lines. Their primary purposes included providing mobile firepower, protecting infantry as they advanced, and crossing difficult terrain, such as barbed wire and mud. Tanks aimed to instill fear in enemy troops and disrupt their defensive positions, ultimately facilitating more effective assaults. Despite early mechanical issues, they marked a significant evolution in warfare tactics and technology.