Which is the country which has only one year for president ​

Switzerland

Explanation:

The President of the Swiss Confederation is elected every year for a one-year term by the Federal Assembly among the seven Federal Councillors who collectively form together the Head of State.

tenochtitlan (also spelled tenochtitlán), located on an island near the western shore of lake texcoco in central mexico, was the capital city and religious centre of the aztec civilization. the traditional founding date of the city was 1345 ce and it remained the most important aztec centre until its destruction at the hands of the conquering spanish led by hernán cortés in 1521 ce, which led to the final collapse of the aztec empire.

equal area projections

equal-area projection. a projection in which regions on the earth's surface that are of equal area are represented as equal.