Question

)Which of these contributed to a long period of stalemate during World War I?

the threat of atomic attacks
the use of trench warfare
the use of machine guns
the threat of chemical weapons

Answer 1

The use of trench warfare contributed to a long period of stalemate during World War I. It is because both sides cannot advance on each other and just hid in their trenches. They cannot gain an advantage on each other with death as their casualty.

Answer 2

The use of trench warfare contributed to a long period of stalemate during World War I.

Step-by-step explanation:

Trench warfare is a form of warfare, in which the fighting armies maintain static lines of fortifications dug in the ground, called trenches. Trench warfare arose from a revolution in firearms. There were periods of trench warfare in the Civil War (1861-1865) and the Russian-Japanese War of 1904-1905, but it reached its peak of brutality and mortality on the Western Front of World War I, where this type of fighting produced a stagnation of three years, until the American forces entered the war and unleashed the conflict in favor of the allies.