1 is the answer to your question.
They planted crops in the fertile river banks
World War I completely changed the way wars were fought.
Trench warfare, which was the norm just a century ago was seen as an nonviable strategy.
Modern machines such as tanks and airplanes made trench warfare mostly about keeping ground and resulted in stalemates.
Also, it was the first time that modern tanks, planes and machine guns were being used for first time at such a large scale, resulting in an unprecedented level of death and carnage.
Military generals soon realized that time-honored military code of conducts were now obsolete and a completely new form of strategy was now required.
The court ruled to remove protection from dangerous
speeches. Charles Schenck was an
anti-war activist who spoke out against the war and was arrested for espionage. It is believe that he was threatening the war
effort with his speeches and was charged as a result.
ensures that checks and balances are respected