sentences:  Major efforts ensued to integrate California with the other states, including sea, overland mail pioneered by George Chorpenning, the Pony Express, and passenger services such as Butterfield Overland Mail.Proposals for the subsidy of a telegraph line to California were made in Congress throughout the 1850s, and in 1860 the U.S. Post Office was authorized to spend $40,000 per year to build and maintain an overland line.The year before, the California State Legislature had authorized a similar subsidy of $6,000 per year.