hat advantage did the astrolabe give sailors? It allowed them to more accurately measure the depth of the water. It allowed them to more accurately know their direction. It allowed them to more accurately know how long they had been at sea. It allowed them to more accurately measure latitude.

Which source would best a historian understand the effect of the great chicago fire on families? a. a biography of a chicago family displaced by the fire b. a letter from a grandmother in new york to her family in chicago c. a newspaper editorial about families who were displaced d. an oral history dictated by an adolescent who fled the fire

What important discovery was made by edmond halley and alexis clairaut, using newton's ideas of mathematics and gravity? they created the scientific method to outline how science should be conducted. they were able to find the orbit of a comet and predict the year of its return. they discovered the three newest planets--uranus, neptune, and pluto. they explained why objects appear to have color.

The map shows england and france in 1430. which statement most accurately summarizes the information provided by the map? england was sure to defeat the french in battle. england occupied land on the european continent. france was about to invade the british isles. france was more powerful than england.