Louisiana Purchase, 25, 34, 140, 167, 213, 251; effect on Mississippi Valley, 189-190 Louisville, 162 Lowell, J. R., on Lincoln, 255 Loyal Land Co., 123, 182 Lumber industry, 152; Wisconsin, 234-235 Lumbermen, 272, 273 Lynch law, 212, 272; New England, 78 McKinley, William, 236, 237, 241 Magnitude, 258, 260, 276 Maine, 52-53 Maine coast, 79 Mallet brothers, 180 Manila, battle of, 247 Manorial practice in New York, 83 Marietta, 124, 133, 223, 257 "Mark colonies," 70 Marquette, Jacques, 180 Martineau, Harriet, 214, 303, 339 Massachusetts, attempt to locate frontier line, 39; frontier, 65; frontier towns, 42, 45, 53, 70; locating towns before settlement, 76 Mather, Cotton, attitude as to advancing frontier, 63 Mesabi mines, 152, 234 Mendon, 57 Methodists, 238 Mexico, 295 Michigan, 135-136, 137; development and resources, 233; settlement, 226, 228 Middle region, 27; in formation of the Old West, 79; typical American, 28 Middle West, agriculture, 150; Canada and, 128; Civil War and, 142; early society, 153-154; education, 282; elements of settlement--Northern and Southern, 346, 351; Europe and, 282; flow of population into, 132-133; forests, 130; Germans and, 137-138; Germans and Scandinavians, 146; idealism, 153; immigrants of varied nationalities, 349; importance, 126, 128; increase of settlement in the fifties, 142-143; industrial organism, 149; meaning of term, 126; nationalism, 142; natural resources, 129; New England element, 137; peculiarity and influence, 347; pioneer democracy, 335; settlement, 135, 342; slavery question and, 139; southern zone, 138 Migration, 21, 237, 337; communal vs. individual, 125; crops, 149; interstate, 224; labor, 62; New England, and land policy, 77 Militant expansive movement, 105 Military frontier, 41, 47; early form, 47; Old West, significance, 106-107; Virginia in later 17th century, 83, 84 Milwaukee, 137, 227, 236, 350 Miner's frontier, 12 Mining camps, 9 Mining laws, 10 Minneapolis, 137, 151, 234 Minnesota, 143, 144, 237; economic development, 234; Historical Society, 335, 338-339 Missions to the Indians, 79 Mississippi Company, 123, 182 Mississippi River, 7, 9, 142, 185, 194, 345 Mississippi Valley, 10, 139, 166-167, 324; beginning of stratification, 197; Civil War and, 201; democracy and, 190; early population, 183; economic progress after 1812, 194; England's efforts to control, 180-181; extent, 179; French explorers in, 180; frontiersmen's allegiance, 186-187; idealism, social order, 203-204; industrial growth after the Civil War, 201-202; political power and growth from 1810 to 1840, 193; primitive history, 179; question of severance from the Union, 187; significance in American history, 177, 185; slavery struggle and, 201; social forces, early, 183 Missouri, 192 Missouri Compromise, 140, 174, 226 Missouri Valley, 135 Mohawk Valley, 68, 82