The most important political center of the Maya realm at its height was San Lorenzo
Kaminaljuyu.
Teotihuacan.
Tikal.
Chavín.

Tikal

Explanation:

Tikal is the name of the the Mayan ruins in Northern Guatemala. It contains many huge structures such as the Jaguar Temple. Since there were so many grand structures here, it makes sense that that would be the answer.

San Lorenzo is an Olmec empire.

Kaminaljuyu is Mayan but it is not as grand in appearance as Tikal, so it would not make sense for it to be as much of a political center.

Teotihuacan was an Aztec city.

Chavin was in Peru, and there were no Mayans in Peru.

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continental currency was denominated in dollars from $​1⁄6 to $80, including many odd denominations in between.

declare war, appoint military officers, sign treaties, make alliances