What reasons did the americans win the revolutionary war ?

You would not have thought the American colonies would have been able to overcome the might of the British empire then, but they did.  Some of the factors that helped the United States win its independence were these:

1. Strongly motivated, fighting for their independence.

2. Use of an outstanding spy network to gather intelligence on British troop movements.

3. Alliance with France, which provided much funding as well as military support.

4. Use of innovative tactics of warfare, such as snipers.

5. George Washington's decision to inoculate the whole army against smallpox in 1777.  Smallpox was a major killer of soldiers on both sides in the war.  Washington's bold move to inoculate all his troops gave the colonists an advantage.

its main object was the establishment of "settlement houses" in poor urban areas, in which volunteer middle-class "settlement workers" would live, hoping to share knowledge and culture with, and alleviate the poverty of, their low-income neighbors.

president carter called the victims of kidnapping "victims of terrorism and anarchy" and added that the united states was not going to give in to blackmail. in the united states, they see hostage-taking as an outrage on the part of the islamist movement that violated the principle of international law on the immunity and inviolability of diplomats and their embassies.

carter refused to yield to the demands, khomeini used the situation to consolidate his power and nullify the challenges of the moderate wing of his government, headed by its president. the euphoria over the humiliation of the most powerful nation distracted the iranian people from the economic difficulties of their country. carter, in april 1980, broke diplomatic relations with iran and imposed a trade embargo, except medicine and food. iranian funds in the us they were frozen and accounted for to compensate the hostages when they were released and to pay the demands of us companies against iran.