The Norwegian Vikings began looking westward after French, Irish, ...

[kaid0807]

The Norwegian Vikings began looking westward after French, Irish, and British strengthened their
  defenses against their raids Indicate whether the statement is true or false.

Question 2

Alfred Thayer Mahan recognized and emphasized that military and commercial control of commerce
  and transportation had a great effect on the overall success of a nation.

Question 3

Hipparchus developed our present grid system of longitude and latitude. Indicate whether the statement is true or false.

[Rilsmarie951]

Answer to Question 1

ANS: T
The Vikings discovered and established colonies in Iceland and Greenland as they moved west. Once
these areas were colonized, they eventually discovered parts of North America. Information can be
found in the section Understanding the Ocean Began with Voyaging for Trade and Exploration

Answer to Question 2

ANS: T
Alfred Thayer Mahan analyzed previous studies on the rise and fall of nations. He stressed the
interdependence of military and commercial control of seaborne commerce and the ability of safe lines
of transportational communication to influence the outcomes of conflicts. His book, The Influence of
Sea Power upon History, 1660-1783, was widely read in Great Britain, Germany, and the United
States. Information can be found in the section The First Scientific Experiments Were Undertaken by
Governments

Answer to Question 3

ANS: T
Although Eratosthenes developed the concept of longitude and latitude, Hipparchus turned this idea
into a grid system which divided the Earth's surface into 360. Ptolemy advanced this by dividing the
degrees into minutes and seconds to assist navigators. Information can be found in the section
Understanding the Ocean Began with Voyaging for Trade and Exploration

[kaid0807]

YES! Correct, THANKS for helping me on my review

[marict]

Excellent