It is believed that early humans first entered into North America by walking across a land bridge that has become the .

What makes ijsselmeer different from other landforms in western europe?

Where did zebulon pike spend most of his time exploring?

Since so many american men during world war ii were fighting overseas, the factorices lay empty. this presented a problem the u.s. military was in such dire need of manufactured goods bullera, tanks, airplanes , ships, and many other things. whose point of view si best reflected in these lunes?