How long did most people think world war 1 would last

In August 1914 German Emperor Wilhelm II famously promised to his departing troops that they would return before the autumn leaves fell.

Explanation:

For nearly a century, the people and politicians of the Northern and Southern states had been clashing over the issues that finally led to war: economic interests, cultural values, the power of the federal government to control the states, and, most importantly, slavery in American society.

Explanation:

Brainliiest plz?