Why was immigration to the u. s. hard for asians in the late 1800’s?

"“forty or fifty years ago, many people thought that simply transferring technologies from industrialized to developing countries would close the technology gap. now we know that technologies developed in industrialized countries may not be suitable for use in other environments. they may require a particular type of infrastructure to operate. they may need specialized parts or knowledge to mend when they break we now understand that innovative capacity must be built in different ways." - united nations secretary-general ban ki-moon based on the secretary general's comments, which of these would be most important for a country to improve? a) native literature b) transportation grid c) cultural traditions d) construction styles

When the communist, under mao, took control of china in 1949 they announced total support support for which country and its ideology?

Why would someone who is studying the history or culture of this time. find this text interesting important or useful?