Tanks provide A variety of roles to infantry today. Main Battle Tanks (MBT's) provide infantry and fight against opposing MBT's and armor. Combat Engineer vehicles clear obstacles with large guns which fire blunt explosives and mortars. Tanks also make speed up warfare, and present a shock factor which may sometimes make infantry abandon their positions when seeing a large tank column or a tank chasing after them! Tanks have obviousley changed warfare greatly in many ways. :)
They were the first tanks, and tanks eventually became a dominant force in warfare as we know it.
It didn't, it might be considered to be a factor in the change to it being called modern warfare. Tanks airplanes ships and other vehicles are all part of modern warfare
Mechanized warfare
There was introduction of the atomic bomb, and mass production of tanks.
Machine guns, tanks, airplanes, chemical warfare
Germany
The first use of tanks in warfare
tanks
Advisery in the beginning, then guerrilla warfare, then conventional warfare with tanks and B-52 bombers.
In World War I, tanks were introduced as a new form of warfare to break the stalemate of trench warfare. They provided a mobile platform that could cross difficult terrain and obstacles while offering protection for the crew. Tanks were used to support infantry assaults, disrupt enemy defenses, and penetrate fortified positions, marking a significant shift in military strategy. Despite early mechanical issues, their presence on the battlefield began to change the dynamics of warfare, paving the way for future armored combat.
If by "solution for trench warfare", you mean a way to end trench warfare, then the invention and widescale use of tanks, bombers and the Blitzkrieg in WWII solved trench warfare.
Tanks were meant to break the stalemate of trench warfare