Mountain chains and river systems generally run North-South throughout the continent thus making for formidable barriers to East-West expansion.
Landform
Climate and weather
Natural hazard
Divisions within Christian religion were initiated by Martin Luther during the 1500's.
Martin Luther was a German professor of theology, and a religious reformer who initiated the Protestant Reformation that occurs during the 1500's. Martin Luther stood against many practices and doctrines of the Roman Catholic Church. He also instigated a group that recreated some basic principles of Christian and led in the separation of western Christianity between the new protestant traditions (such as the Anglican communion, Anabaptists, Lutheranism), and Roman Catholicism.
<span>Selection (a) is the best answer. Rainforests, through their ecosystems, are able to mitigate the effects of prolonged rain events and droughts that could take place in the areas in which they reside. The expansive canopies and tall trees hold in the moisture that does fall to make sure that the areas within them receive sufficient moisture for growth.</span>
