What can you say about tech developments in World War 1

What was the most important consequence of the large-scale ecological changes in africa two hundred thousand years ago?

What was a major failing of the united states government under the articles of confederation?

Which of these actions were taken by the us government to get ready for war? check all that apply. using a draft to build armed forces planting victory gardens for food and to boost morale promoting conservation of key products trying to get people to buy liberty bonds taking new jobs to meet demands promoting patriotism