Roads and Trails into Western Territory (color map) _Facing_ 224

The Cumberland Road 233

Distribution of Population in 1830 235

Texas and the Territory in Dispute 282

The Oregon Country and the Disputed Boundary 285

The Overland Trails 287

Distribution of Slaves in Southern States 323

The Missouri Compromise 326

Slave and Free Soil on the Eve of the Civil War 335

The United States in 1861 (color map) _Facing_ 345

Railroads of the United States in 1918 405

The United States in 1870 (color map) _Facing_ 427

The United States in 1912 (color map) _Facing_ 443

American Dominions in the Pacific (color map) _Facing_ 500

The Caribbean Region (color map) _Facing_ 592