Answer:
Buying pre-faded jeans because everyone else is doing it-Trend
Buying pre-faded jeans because all your friends have them-Peer pressure
Buying pre-faded jeans because they're less expensive than other jeans-Price
You would say you have a "Surplus"
Rise
The rise of Islam in Africa and Asia was a consequences of years of military and political strategies as well as missionary work. After the Arab peninsula was united under one leadership of the prophet of Islam, there was enough stability and funding to expand abroad.
Islam grew out of a region that is correctly identified as the Middle East, completely in between both Africa and vast Asia.
The natural expansion of the religion took place in Palestine and to the east in, Syria and Persia up til modern-day Pakistan.
On the west, the expansion was naturally in Egypt and North Africa.
Fall
While Islam never 'Fell' out of Africa, there was a marked decline in Islamic Empires. This was mostly due to European powers who were scrambling for Africa. This saw the English, French, Belgians all conquer large parts of the land and use them for slaves and other trades.
Answer:
Germany declared war on Russia because they wanted to also declare war on the French. In an audacious move called the Schlieffen Plan Germany had to attack Russia to delay the progress of their steam rail expansion then while the Russians are distracted attack France. Germany knew for certain if they allowed Russia to complete their rail connections the Russian with their superior numbers would overrun them.
Explanation:
The Republic of Venice, The Republic of Florence, and The Duchy of Milan.