Ciudad Las Vacas is a smaller city in eastern Tejas. Its full Castillian name is Ciudad Las Vacas de San Miguel, which derives from an old local ranch close to the old Mision San Miguel. The ranch became the centre of an important local livestock market, and the livestock market gave rise to the city. It is located in eastern Tejas on the Trinidad river, approximately where the city of Fort Worth stands. The land is flat to gently rolling, carved throughout by the area’s waterways, and the soil is rich. Ciudad Las Vacas is located very close to several large natural gas fields, and these form the basis of much of its modern economy, together with the helium which can be extracted from the gas.

Ahhhh, "...flat to gently rolling..." = explains the preponderance of single/fixed geared bikes.

Learning is key to understanding.

Historically, the first República de Tejas was a short-lived experiment in non-monarchical government founded in the 1828 as a reaction of the Mejican Creole aristocracy against both the liberal policies of the Kingdom of Castile and Leon and the Indian insurrection in Mejico once the Mechicas had gotten control of most Mejican territory and were moving north towards New Mejico and Tejas. In 1833 Mejico defeated the Tejians and claim Tejas as a Mejican province. Texas became a US state in 1845. Texas became a state on December 29, 1845, when it was admitted to the United States as the 28th state.Texas became a state on December 29, 1845, when it was admitted to the United States as the 28th state.Texas became a state on December 29, 1845, when it was admitted to the United States as the 28th state.