What was one of the causes of tensions in europe that led to world war i?
1.the nations in eastern europe wanted to unite as a single nation under the ottoman empire.
2.germany, austria-hungary, and russia promised to send military support if a war broke out in europe.
3.france, germany, and other nations were competing for overseas territory in africa and other places.
4.britain cut off germany’s supply ships, and the german people were slowly starving.

the andes or andean mountains (spanish: cordillera de los andes) are the longest continental mountain range in the world, forming a continuous highland along the western edge of south america. this range is about 7,000 km (4,300 mi) long, about 200 to 700 km (120 to 430 mi) wide (widest between 18° south and 20° south latitude), and of an average height of about 4,000 m (13,000 ft). the andes extend from north to south through seven south american countries: venezuela, colombia, ecuador, peru, bolivia, chile and argentina.

from wikipedia

hope this !

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