The open door policy resulted from which of these factors?
the start of a communist revolution in china

the expansion of japanese territory in mainland asia

the rapid industrialization of southeast asian nations

the attempts of european nations to control trade in china

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