What is the area measurement of one league/sitio?

One league, often referred to in historical contexts and land surveying, is equivalent to 25,000,000 square varas. This measurement originated from Spanish land grants and has been formalized in various jurisdictions. The vara is a traditional unit of length that varies by location, but in Texas, it is defined as approximately 33.333 feet. Therefore, calculating the area in square varas involves squaring the length measurement of a vara, which leads to a significantly larger area when scaled up to leagues.

Understanding the measurement helps contextualize land areas, especially regarding historical land grants and native land descriptions, common in Texas history. The other options represent either smaller land areas or different units altogether, thus making them unsuitable as definitions for one league/sitio.