A1 in 1862 was ready for the Chisholm Trail glory days right after our civil war. Texas Longhorns--5 million head driven by American cowboys--found their way up through Kansas to the Chicago slaughterhouses and then to New York dinner and a good bit all the way to London.
Good point connecting those dots. Texas cattle drives, the rapid expansion of railroads to Chicago and St. Louis, a growing taste for beef, more people traveling, luxurious hotels opening in big cities...it all came together and A1 Steak Sauce was born.