%490. The Union Pacific Railroad; the Land Grant Roads.%--Meantime the war opened, and an idea often talked of took definite shape. California had scarcely been admitted, in 1850, when the plan to bind her firmly to the Union by a great railroad, built at national cost, was urged vigorously. By 1856 the people began to demand it, and in that year the Republican party, and in 1860 both the Republican and Democratic parties, pledged themselves to build one. The secession of the South, and the presence at Denver of a growing population, made the need imperative, and in 1862 Congress began the work. Two companies were chartered. One, the Union Pacific, was to begin at Omaha and build westward. The other, the Central Pacific, was to begin at Sacramento and build eastward till the two met. The Union Pacific was to receive from the government a subsidy in bonds of $16,000 for each mile built across the plains, $48,000 for each of 150 miles across the Rocky Mountains, and $32,000 a mile for the rest of the way. It received all told on its 1033 miles $27,226,000. The Central Pacific, under like conditions, received for its 883 miles from San Francisco to Ogden $27,850,000. But the liberality of Congress did not end here. Each road was also given every odd-numbered section in a strip of public land twenty miles wide along its entire length. %491. Land Grants for Railroads and Canals.%--Grants of land in aid of such improvements were not new. Between 1827 and 1860 Congress gave away to canals, roads, and railroads 215,000,000 acres. This magnificent expanse would make seven states as large as Pennsylvania, or three and a half as large as Oregon, and is only 6000 acres less than the total area of the thirteen original states with their present boundaries. Although the roads were chartered in 1862, the work of construction was slow at first, and the last rail was not laid till May 10, 1869.