Rain mixes with which substances to become acidic?

when sulfur dioxide sulfur & nitrogen oxides are released into the air.

the american revolution was between the patriots and the british forces. the patriots believed that they needed independence from great britain, due to "lack of representation" and taxes. this tension resulted in the american revolution where both fought, but ultimately the patriots won. the french revolution was an upsurge/revolt between the monarchy (king louis xvi of france) and the bourgeoisie class (common people) demanding better pay and rights. this ultimately became an overthrow of the government, where king louis xvi of france and his spouse marie antoinette were executed for treason. the mexican revolution was caused by a disagreement on the morality of the dictatorship of president porfirio díaz, who remained in office for 31 years. (! d: )   in effect, the old and radical government was changed by the people to meet the economic needs of the people (yes diaz surrendered xd) all 3 revolutions were in response to another political power that controlled the freedom and liberty of the minority population. the british controlled the patriots. king louis xvi controlled the people of france, and dictator diaz controlled the poor civilians of mexico.  

hope this : d

relations between the soviet union and the united states were driven by a complex interplay of ideological, political, and economic factors, which led to shifts between cautious cooperation and often bitter superpower rivalry over the years. the distinct differences in the political systems of the two countries often prevented them from reaching a mutual understanding on key policy issues and even, as in the case of the cuban missile crisis, brought them to the brink of war.

the united states government was initially hostile to the soviet leaders for taking russia out of world war i and was opposed to a state ideologically based on communism. although the united states embarked on a famine relief program in the soviet union in the early 1920s and american businessmen established commercial ties there during the period of the new economic policy (1921–29), the two countries did not establish diplomatic relations until 1933. by that time, the totalitarian nature of joseph stalin's regime presented an insurmountable obstacle to friendly relations with the west. although world war ii brought the two countries into alliance, based on the common aim of defeating nazi germany, the soviet union's aggressive, antidemocratic policy toward eastern europe had created tensions even before the war ended.