Question

who selects chief executive form of government and role of citizen of mexico brazil and cuba

Answer 1

Here’s a short, direct comparison for each country: form of government, who selects the chief executive, and the typical role of citizens in choosing or participating.

Mexico
- Form of government: Presidential representative democratic republic (federal).
- Who selects the chief executive: The President is elected directly by popular vote (simple plurality) in a nationwide election.
- Term/limits: One six-year term (sexenio), no immediate or later reelection for the same office.
- Role of citizens: Citizens (18+) vote in national and local elections, join political parties, run for office, and engage in civil society. National elections are administered by the independent Instituto Nacional Electoral (INE).

Brazil
- Form of government: Federative presidential republic.
- Who selects the chief executive: The President is elected by direct popular vote using a two-round system (if no candidate gets >50% in round one, the top two go to a runoff).
- Term/limits: Four-year term, eligible for one consecutive reelection (i.e., up to two consecutive terms).
- Role of citizens: Voting is mandatory for literate citizens aged 18–70; optional for 16–17-year-olds, those 70+, and illiterate citizens. Citizens vote for president, Congress, governors, and local offices; join political parties and run for office. Elections are administered by the Superior Electoral Court (TSE).

Cuba
- Form of government: Socialist republic / one‑party state (the Communist Party of Cuba is constitutionally the leading force).
- Who selects the chief executive: The President (and other top leaders) is chosen indirectly by the National Assembly of People’s Power (the unicameral legislature), not by a direct, multi‑party presidential election.
- Term/selection context: Deputies to the National Assembly are elected in national elections, but candidate selection and the political process are tightly controlled by the state and party-linked organizations.
- Role of citizens: Citizens (voting age commonly from 16) participate in elections for municipal delegates and National Assembly deputies, and there is high formal voter turnout; however, independent political parties are not permitted and candidate nomination is dominated by state-sanctioned bodies, so citizen choice is more constrained than in multi‑party democracies.

If you want, I can expand on any of these points (electoral procedures, ages and eligibility, election authorities, or examples of how nominations work in Cuba).