Environmental damage in Thuringia has been reduced to a large extent after 1990. The condition of forests, rivers and air was improved by modernizing factories, houses (decline of coal heating) and cars, and contaminated areas such as the former Uranium surface mines around Ronneburg have been remediated. Today's environmental problems are the salination of the Werra river, caused by discharges of K+S salt mines around Unterbreizbach and overfertilisation in agriculture, damaging the soil and small rivers.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): What is one thing that helped to ruin condition of forests, rivers and air?
Ah, so.. unanswerable

Major outputs for the state include textiles, cotton, cattle, and electrical power. Tennessee has over 82,000 farms, roughly 59 percent of which accommodate beef cattle. Although cotton was an early crop in Tennessee, large-scale cultivation of the fiber did not begin until the 1820s with the opening of the land between the Tennessee and Mississippi Rivers. The upper wedge of the Mississippi Delta extends into southwestern Tennessee, and it was in this fertile section that cotton took hold. Soybeans are also heavily planted in West Tennessee, focusing on the northwest corner of the state.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): When did cotton first become a large-scale agricultural product in Tennessee?
Ah, so.. 1820s

In 1820-1830's the Ottoman Empire endured a number of strikes which challenged the existence of the country. The Greek Uprising (began in the spring of 1821) evidenced internal and military weakness of Ottoman Empire and caused severe atrocities by Ottoman military forces (see Chios massacre). The disbandment of the centuries-old Janissary corps by Sultan Mahmud II on 15 June 1826 (Auspicious Incident) was a good deed for the country in the longer term, but it has deprived the country from its army forces for the nearest future. In 1827 the allied Anglo-Franco-Russian fleet destroyed almost all the Ottoman naval forces during the Battle of Navarino. In 1830 Greece becomes an independent state after 10 years of independence war and the Russo-Turkish War of 18281829. According to the Treaty of Adrianople (1829) Russian and European commercial ships were authorized to freely pass through Black Sea straits, Serbia received autonomy, and Danubian Principalities (Moldavia and Walachia) became the territories under Russian protection.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): In what year was the Janissary corp disbanded?
Ah, so..
1826