Answer:
Radio-wave communications signals travel through the air in a straight line, reflect off of clouds or layers of the ionosphere, or are relayed by satellites in space. They are used in standard broadcast radio and television, shortwave radio, navigation and air-traffic control, cellular telephony, and even remote-controlled toys.
Explanation:
Answer: You're defending what you stand for, and what you truly believe in.
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The correct answer is D. The achievement of Manifest Destiny and the need for a "New American Frontier". The Manifest Destiny was an american philosphy from the 19th century that stated it was America's right, given by God, to expand and conquer other territories. In this period, imperialism was increasing at a global level and United States didn't want to be left behind of this imperalist race. The idea of the <em>New american frontier</em> was to expand the settled area as the first americans had started to do when they got to the new continet. The frontier had actually been changed by events like the Louisiana purchase but there was always a new frontier they wanted to reach.
What were some key motives for Europeans during the Age of Exploration? Some key motives for Europeans during the Age of Exploration was they wanted to find a new sea route to Asia, they wanted knowledge, they wanted to spread Christianity, they wanted wealth and glory, and they wanted spices.
<em>The factors that caused Rome to plunge into civil wars and weakened the Republic were:
</em>
<u>Power and control</u>. Powerful Roman families desired to gain control at any cost. Assassinations were the order of the day. There were some Roman Emperors that lasted very few ruling the Empire. It debilitated the social structure of Rome.
<u>Ambition</u>. The Roman Empire was so ambitious. Its hunger for more territories made them always be involved in conquering wars. The Empire expansion reached so far Rome that in those far away places the Empire could not sustain its armies and their presence.
<u>Egotism</u>. Roman soldiers were more loyal to their commanders than the same Empire. This means that loyalty was to the person, the leader, more than Rome. Battles among troops started and this debilitated the Roma army.
<u>Killing</u>. Those differences and political control generated wars among the Romans and many people were killed.
<u>Patricians land</u>. There was a Land legislation to take land from the Patricians to give it to the Military men after sixteen years of service in the Roman Army. This was one of the reasons for the civil war.