American EconomyPPT制作：PPT主讲：1 ppt 课件Contents 1 Share a video2 General introduction3 History of American Economy 4 Current American Economy目录2 ppt 课件Now, wed like to share a video for you. 3 ppt 课件(1)It is an economic and technological giant.(2)It ranks first in such fields in such fields as computers technology , space technology , nuclear energy and electronics.(1)Businesses are directly or indirectly owned and operated by private individuals.(2)The federal government is involved in the system
