Answer:
480 million years ago
The Appalachians first formed roughly 480 million years ago during the Ordovician Period, and once reached elevations similar to those of the Alps and the Rocky Mountains before they were eroded.
Explanation:
so b is your answer
Can you give out the options :)
they had opposing views as to whether or not slavery should be legal in the west.
Uncle Sam refer to the Federal government of United States.
Explanation:
The Spanish-American War ended in December, 1898, when Spain surrendered to the U.S. and negotiated a peace treaty that sold Guam, Puerto Rico, and the Philippines to the U.S. Cuba remained independent, but strongly under the influence of the United States. The Philippine Republic went to war against the U.S. to defend its independence. The brutal war lasted three years, and was followed by a half-century of U.S. occupation of the Philippines
Uncle Sam (U.S.) is a common national imagery of the U.S. federal government or the country in general that came into use during the War of 1812.
