In almost endless ways, we are still dealing with the aftershocks now.
Here are just some of the ways in which the collapse of the USSR affected the world. I am sure others can think of other ways:
A new wave of democracy as old Communist regimes collapsed in Eastern Europe, in particular, and as the US abandoned its support for authoritarian right-wing regimes in Latin America, especially, as the country no longer felt the need to put stopping the USSR ahead of democracy and human rights. A new focus on democracy and human rights as an outcome of foreign policy, rather than an attempt at containing the Soviets, no matter the cost The end of wars in places like Angola, where the two sides were essentially proxies for the two superpowers The US becoming the sole superpower and the creation of a unipolar world (though we are now, arguably, seeing the rise of additional poles) Independence for ex-Soviet republics such as the Baltic states, Ukraine and the Central Asian Republics such as Kazakhstan The collapse of the Russian economy, mass-poverty, the rise of gangster capitalism, leading to cynicism of democracy and capitalism, and the eventual rise of Vladimir Putin
The poster he created of Uncle Sam motivated people to join the army. This use of propaganda was heavily relied on during the early-mid twentieth century, as they didnt have the media for spreading news far.