Вставить недостающие слова в текст по английскому языку (25 предложений)

What words are missed? Complete the text with these words. Some of them can be used twice. 

 Слова:

USA; state; one; Northern; Mexico; North; regions; Cordillera; short rivers; canals; west; Salt; Pacific; Washington; fifty; Rocky Mountains; Michigan; Canada; Hudson; Appalachian Mountains; Mississippi; 

The (1) __ is the most powerful and the most advanced capitalist country. The capital is (2) ___. The USA is a federal (3) ___. It consists of (4) ___ states and (5) ___ district. The USA is situated in the (6) ____ part of the (7) ____ American continent. It stretches from the Atlantic Ocean in the east to the (8) ____ Ocean in the west, from (9) ____ in the north to (10) ___ in the south. The USA is the largest country in (11) ___ America. The continental part of the USA consists of two highland and two lowland (12) ___. The highland regions are the (13) ___ ___ in the east, and the (14) ___ and the (15) ___ ___ in the west. The 5 Great Lakes, between the USA and (16) ___, include Lake Superior, Lake Michigan, Lake Huron, Lake Erie, and Lake Ontario. Only Lake (17) ___ is entirely situated on the territory of the USA. They are all joined together by (18) ____ ___ and (19) ___. In the (20) ___ of the USA there is another lake called the Great (21) ___ Lake. The main rivers of the USA are the Mississippi, flowing south to the Gulf of (22)___ , the Missouri, flowing into the (23)___; the Colorado, flowing into the Gulf of California; the Columbia, flowing into the (24)____ Ocean, the St. Lawrence River and the (25) ___River, flowing into the Atlantic Ocean.