Obsidian is a type of igneous rock that is very smooth, glassy, and it contains small crystals. what does this tell you about this type of rock? it is an extrusive igneous rock, formed beneath the surface of the earth. it is an intrusive igneous rock, formed outside the surface of the earth. it is an extrusive igneous rock, formed outside the surface of the earth. it is an intrusive igneous rock, formed inside the surface of the earth.

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.

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the correct answer that would best complete the given statement above would be option b. expanding civil services. diocletian and constantine paved the way for foreign invasion by dividing the empire, creating administrative bureaucracies and reorganizing the military, except for expanding civil services. hope this answer .

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