Out of the three movements, the independence of India was the one that required the least amount of fighting. India achieved its independence in a peaceful manner through the adoption of the ideas of civil disobedience. However, although the process of independence was initially peaceful and led to a straight-forward retreat of the British, its aftermath was more complicated. In the aftermath of independence, India was fragmented into India and Pakistan, with Bangladesh separating from Pakistan later on.
In the case of Latin America, there were several movements that took place at different times. However, several of this were unified thanks to the figure of Simon Bolivar. The conflicts that took place were a lot more violent than those of India. Moreover, fragmentation was also more significant, as these resulted in the creation of several new countries.
Finally, the independence of the United States took place much earlier than these other independence movements. The independence of the Thirteen Colonies was one of the earliest movements for independence to take place. However, it did not lead to the creation of a country. Instead, it led to the creation of a union or a confederacy of several separate colonies, united through some common ties and documents, such as the Declaration of Independence and the Articles of Confederation.
Scientific innovations created jobs for Americans by that product going nation-wide. What that means, is that when someone's scientific innovation went nation wide, or even global, they wold have to build factories, and places to make and sell that product. With those new buildings, comes new jobs, and he economy is improved. Take Thomas Edison for example. He commercialized the light bulb. When it became popular, he build huge power plants to build his product. He had to have people build his product inside the power plant. Those new jobs were filled by Americans.
B. Gerald Rudolph Ford, Jr. <span />
the strongest military and Industrial power in Europe by 1888 was Germany :)