The French forces tried to subdue and capture the liberal government based in Saltillo. On September 21, 1864, Jose Maria Patoni and Jesus Gonzalez Ortega lost against the French forces at the Battle of Estanzuelas; the supreme government led by President Juarez was forced to evacuate the city of Saltillo and relocate to Chihuahua. Juarez stopped in Ciudad Jimenez, Valle de Allende, and Hidalgo de Parral, in turn. He decreed Parral the capital of Mexico from October 25, 1864. Perceiving the threat from the advancing French forces, the president continued his evacuation through Santa Rosalia de Camargo, Santa Cruz de Rosales, and finally Chihuahua, Chihuahua. On October 12, 1864, the people of the state gave President Juarez an overwhelmingly supportive reception, led by Governor Angel Trias. On October 15, 1864 the city of Chihuahua was declared the temporary capital of Mexico.
French forces tried to capture the liberal government based where?
Saltillo

By 1840, the Market Hall and Sheds, where fresh meat and produce were brought daily, became a hub of commercial activity. The slave trade also depended on the port of Charleston, where ships could be unloaded and the slaves bought and sold. The legal importation of African slaves had ended in 1808, although smuggling was significant. However, the domestic trade was booming. More than one million slaves were transported from the Upper South to the Deep South in the antebellum years, as cotton plantations were widely developed through what became known as the Black Belt. Many slaves were transported in the coastwise slave trade, with slave ships stopping at ports such as Charleston.
What year did the legal importation of slaves end?
1808

Canadian bitumen does not differ substantially from oils such as Venezuelan extra-heavy and Mexican heavy oil in chemical composition, and the real difficulty is moving the extremely viscous bitumen through oil pipelines to the refinery. Many modern oil refineries are extremely sophisticated and can process non-upgraded bitumen directly into products such as gasoline, diesel fuel, and refined asphalt without any preprocessing. This is particularly common in areas such as the US Gulf coast, where refineries were designed to process Venezuelan and Mexican oil, and in areas such as the US Midwest where refineries were rebuilt to process heavy oil as domestic light oil production declined. Given the choice, such heavy oil refineries usually prefer to buy bitumen rather than synthetic oil because the cost is lower, and in some cases because they prefer to produce more diesel fuel and less gasoline. By 2015 Canadian production and exports of non-upgraded bitumen exceeded that of synthetic crude oil at over 1.3 million barrels (21010^3 m3) per day, of which about 65% was exported to the United States.
What property of bitumen makes it difficult to move through pipelines?
extremely viscous