Answer: i want to help but i dont understand
Explanation:
Este artículo trata sobre la evolución de las fronteras de los Estados Unidos se reconocen en el cuadro cada uno de los cambios en las fronteras interiores y exteriores del país así como el estatus y los cambios del nombre también muestra las áreas importantes que finalmente pasaron a formar parte de los Estados Unidos cada situación tiene un mapa que muestra la composición específica del país en este momento dado
<u>Answer:</u>
C- The water was a constant shallow sea during that time.
This was happened to the Grand Canyon area during the Permian Age.
<u>Explanation:</u>
The Grand canyon consists of the most studied sequence and complete rock on earth. They are nearly 200 million to 2 billion of years old, of which most of them were deposited in shallow, warm seas and near the ancient and the sea shores which were long gone.
The youngest formation of rock in the grand canyon is the Kaibab Limestone, which was laid down during the Permian age by the advancing warm and shallow sea. Although, the areas climate has been changing constantly during recent times from cool and wet pluvial to semi arid conditions. And also, with less water to cut, the erosion has also reduced greatly.
Answer:
Settling the Borderlands As conquistadors explored new territories, they claimed the areas for Spain. By 1600, the Spanish borderlands extended west from Florida across present-day Texas, New Mexico, Arizona, and California. At first, Spain did little to encourage settlement in these far-flung areas.
Answer:
a notional barrier separating the former Soviet bloc and the West prior to the decline of communism that followed the political events in eastern Europe in 1989.
Explanation:the political, military, and ideological barrier erected by the Soviet Union after World War II to seal off itself and its dependent eastern and central European allies from open contact with the West and other noncommunist areas. The term Iron Curtain had been in occasional and varied use as a metaphor since the 19th century, but it came to prominence only after it was used by the former British prime minister Winston Churchill in a speech at Fulton, Missouri, U.S., on March 5, 1946, when he said of the communist states, “From Stettin in the Baltic to Trieste in the Adriatic, an iron curtain has descended across the Continent.”
The restrictions and the rigidity of the Iron Curtain were somewhat reduced in the years following Joseph Stalin’s death in 1953, although the construction of the Berlin Wall in 1961 restored them. During the Cold War the Iron Curtain extended to the airwaves. The attempts by the Central Intelligence Agency-funded Radio Free Europe (RFE) to provide listeners behind the Curtain with uncensored news were met with efforts by communist governments to jam RFE’s signal. The Iron Curtain largely ceased to exist in 1989–90 with the communists’ abandonment of one-party rule in eastern Europe
