Answer:
The Byzantines sent wave after wave of christian missionaries to the Slavic lands, which sorrounded the Byzantine Empire.
Two of the most important missionaries were Saint Cyril and Saint Methodious. They were brothers, and converted many slavs to Orthodox Christianity, specially those living in Moravia. They also invented the cyrilic alphabet to give a script to the Slavic languages, and help spread christianity faster. Hence the name of the alphabet.
The answer to your question is i think c . hope this will help.
Answer: 3. Ideological divisions
Explanation:
In the late nineteenth century, people were basically divided among the two strongest contending parties which are the Democratic and Republican parties.
The masses were strongly involved in the political affairs leading to large voters turnout. Some political analysts attribute the passion with which people supported their political affiliations to cultural inclinations.
Presidency of Martin Van Bueren was difficult because of economic problems caused by jacksons policies
Explanation:
Martin Van Bueren was the landmark presidency for many reasons. He was the first foreign language speaking president of the USA and he was also the first President to be born after the independence of USA.
He was perhaps, the continuation of USA as a nation but unfortunately his term was defined by continued economic troubles from the time of Andrew Jackson as he faced the brunt of his expansion policies to the west and also suffered through the loss off industrial output which was less focused on during the time.
Well all living organisms require oxygen to survive, and all bodies of water on this planet are usually heavily oxygenated, which im guessing is where the underwater plants get all their nutrients from. hope this helps!