Please help will give BRAINLIEST 1. What were the main reasons for U. S. involvement in the war?
2. Where did Germany begin it’s more expensive, and what happened there?
3. How did the United States mobilize a strong military during world war one?
4. What new weapons made fighting in a world war one deadlier than fighting in previous wars?

which war if its wwii,

1. japan bombed pearl harbor

2. makes no sense

3. theydidnt fight, just didnt fight and their economy grew strong

4. there was new materials

Explanation:

The main reasons the US got involved in the war was because of nationalism, imperialism, militarism, and forming allies. Many countries were scared of Germany's nationalism. Imperialism helped Germany with its markets making it stronger. With all this power they even had the an army all set up. The United States mobilized a strong military during World War I because of the Selective Service Act, random men would be called to the front to fight in the war. About 2 million were registered and ¾ of them went to fight. To sell the war to the nation, the government raised taxes. Some of the many new inventions / tactics that made WWI deadlier than any other war were:-Machine (Automatic / Semi-Automatic) Gins-Air Power (Airplanes / Airships)-AntiAircraft Gun -Poison Gas-Tanks 5)

Explanation: SORRY COULD NOT GET NUMBER 2 I WAS STUMPED BUT I GOT ALL THE OTHER ONES THO HOPE IT HELPS HAVE A GOOD DAY MY FRIEND.

answer; /// i believe that the correct answer is (d)the huang he river valley;

bismarck believed in using force

is the correct answer!