Marx outlined the transition period as resulting from the explosive transformation of the capitalist system destroyed by its own contradictions. In historical reality, however, we have seen that some countries that were weak limbs on the tree of imperialism were torn off first—a phenomenon foreseen by Lenin. In these countries capitalism had developed sufficiently to make its effects felt by the people in one way or another. But it was not capitalism's internal contradictions that, having exhausted all possibilities, caused the system to explode. The struggle for liberation from a foreign oppressor; the misery caused by external events such as war, whose consequences privileged classes place on the backs of the exploited; liberation movements aimed at overthrowing neocolonial regimes--these are the usual factors in unleashing this kind of explosion.