1)its (write) history is only a few hundred years old. (many) than 320 million people live there. they are a mixture of many different (nationality). americans are not afraid of new ideas. they put the (one) man on the moon. americans (interest) in old traditions, too. this country is worth (visit). 2)the usa (be) a large country. if you (go) to the us, you (see) its different natural wonders. the country (have) every kind of weather. many rivers (cross) it. but the (great) is the mississippi. the grand canyon (be) one of the main tourist attractions. it (form) by the river colorado millions of years ago.