Man, Isle of:
hills in north and south bisected by central valley
Marshall Islands:
low coral limestone and sand islands
Martinique:
mountainous with indented coastline; dormant volcano
Mauritania:
mostly barren, flat plains of the Sahara; some central
hills
Mauritius:
small coastal plain rising to discontinuous mountains
encircling central plateau
Mayotte:
generally undulating, with deep ravines and ancient
volcanic peaks
Mexico:
high, rugged mountains; low coastal plains; high plateaus;
desert
Micronesia, Federated States of: islands vary geologically from high mountainous islands to low, coral atolls; volcanic outcroppings on Pohnpei, Kosrae, and Truk
Midway Islands:
low, nearly level
Moldova:
rolling steppe, gradual slope south to Black Sea