How were the motives of the Cuban and Mexican Revolutions similar?

I assume that you are talking about Fidel Castro's revolution in
the 1950s as opposed to the rebellion against Spain in the 1890s. And I assume you are talking
about the Mexican Revolution of the 1910s in which the government of Porfirio Diaz was
overthrown. The motives in these two revolutions were similar in that both sets of rebels wanted
to overthrow a long-standing dictatorship that had (in many people's minds) been run for the
benefit of foreigners and a small native elite.

In both cases, there
was a dictator who had ruled for a long time--Porfirio Diaz, who had ruled for over 30 years in
Mexico, and Fulgencio Batista, who had ruled Cuba for most of 26 years. Both dictators were seen
as people who ruled in ways that were of great benefit to foreigners, particularly business
interests from the United States. Both were seen as rulers who helped only a small sliver of
their own population.

Because of this, each dictator faced eventual
rebellion from people who wanted a government that would be more responsive to the broader
population of their country. This desire for a more responsive government motivated both the
Mexican and Cuban Revolutions.