Problem: Important geological concepts were established as naturalists began studying the rock formations of the Alps in the 18th century. In the mid-19th century the now defunct theory of geosynclines was used to explain the presence of "folded" mountain chains but by the mid-20th century the theory of plate tectonics became widely accepted.
What was used in the mid-19th century to explain the presence of "folded" mountain chains?
The answer is the following: theory of geosynclines

Problem: The Slavs under name of the Antes and the Sclaveni make their first appearance in Byzantine records in the early 6th century. Byzantine historiographers under Justinian I (527565), such as Procopius of Caesarea, Jordanes and Theophylact Simocatta describe tribes of these names emerging from the area of the Carpathian Mountains, the lower Danube and the Black Sea, invading the Danubian provinces of the Eastern Empire.
The Slavs were under what name in the early 6th century?
The answer is the following: the Antes and the Sclaveni

Problem: The island had a monocrop economy until 1966, based on the cultivation and processing of New Zealand flax for rope and string. St Helena's economy is now weak, and is almost entirely sustained by aid from the British government. The public sector dominates the economy, accounting for about 50% of gross domestic product. Inflation was running at 4% in 2005. There have been increases in the cost of fuel, power and all imported goods.
What was produced during the time the Island was monocrop?
The answer is the following: flax

Problem: The city management and urban policy program was ranked first in the nation, and the special education program second, by U.S. News & World Report's 2016 rankings. USN&WR also ranked several programs in the top 25 among U.S. universities.
In what tier did a number of KU's programs rank in 2016?
The answer is the following:
the top 25