During World War I, developments in military

technology led to

(1) an early victory by the Allied powers

(2) the establishment of industrial capitalism

(3) the use of poisonous gas and submarine

attacks

(4) an increase in ethnic tension in western

Europe

The correct answer in short is (3) the use of poisonous gas and submarine attacks.

During the World War I, many technological, medical and military advances happened.

Developments in military technology especially were ones to be frightful of. These developments led to (3) the use of poisonous gas and submarine attacks.

Submarine attacks and poisonous gas was never before used at such a scale before in battles (neither was either available).

Answer; 3

During World War I, developments in military technology led to the use of poisonous and submarine attacks.

Explanation;

The major impact of technology on World War I (WWI) was that it made the war much more difficult for the infantry soldiers who did most of the fighting. The new technologies led to trench warfare and the lack of new tactics led to massive slaughter at the hands of the new technology. These new technologies includes, the use of trench warfare, Poisonous gas, tanks, submarines, and command and control among others.