The U.S became a wold leader.
It doesn't
The computer has a large role in government affairs. For instance if someone needs information about another country they could look it up.
It hasn't.
Roosevelt's intervention emphasized America's growing role in world affairs.
Lately it seems that there is more attention to foreign affairs as opposed to dealing with the many issues facing our own people in the US. It's time Congress focuses more efforts on our own country - we have starving people, too.
rawr
== ==
It doesn't
england
spy network
Laissez Faire
They didn't play a role in "global trade." First, there was no global trade as we think about it. Second the British passed the navigation acts which meant that they could only by and sell to the British. Smuggling took place and Dutch tea was brought in as well as items from France.
offering aid to developing countries
The role of Pearl Harbor was US entry into WW2; making WW2 a truly Global War.
Cities and the people in them play a large role in global warming. Heating, cooling and transport in the cities use massive amounts of fossil fuels (coal, oil and natural gas). When fossil fuel is burnt it releases carbon dioxide, one of the greenhouse gases that are causing global warming.
Offering aid to developing countries.