Northern and Southern Europe Crossword Puzzle

QUESTIONS LIST: vasco de gama : first man to sail from europe to india, martin luther : he started the protestant reformation, vikings : group of warriors from scandinavia, fjord : narrow, water filled valleys, columbian exchange : an exchange of goods and disease from europe and the americas, constantine : he moved the capital of the roman empire to byzantium, istanbul : when the turks conquered the eastern roman empire they changed the name of constantinople to this, city states : ancient greece was divided into these independent regions, alexander : macedonian king who conquered greece, egypt and persia, galileo : he created the first telescope, renaissance : a period of artistic and intellectual breakthroughs, iceland : country with over 200 volcanoes, athens : a powerful city-state that rivaled sparta