Please help.. It will really make my day.. I’ll mark brainliest, ty.. Arrange the following events in the order in which they happened by selecting the correct answer from each drop-down.

Event 1
Event 2
Event 3
Event 4

Options :
A. The Europeans attacked the Muslim empire As part of the crusades.

B. Muhammad unified most of the Arabian Peninsula into a single
Islamic state.

C. The Umayyad Army crossed the strait of Gibraltar and conquered Spain.

D. Islamic forces conquered Mesopotamia by defeating the Byzantine people.

by using  production possibilities graph.  opportunity costs are key expenses in financial matters and are utilized as a part of registering money saving advantage investigation of a venture. such expenses, be that as it may, are not recorded in the record books but rather are perceived in basic leadership by processing the money costs and their subsequent benefit or misfortune.

d.

thist title points out that you are explaining the nature of the u.s. government. it is the most specific. a representative government consists of a government where decisions are taken according to a voting system. the most essential aspect of a representative government is found in the different structures where voting rights are granted to different groups of people. for example, voting for governor, mayor, president, local police chief etc.