Dude, we need more info...
The correct options are these:
1. Harappan cities had public sewage system.
2. Harappan planned organised roads and interconnected alley in towns.
These two characteristics showed that the people of harappan civilization were very much more civilized that their contemporaries at that time period.
1 and 4 are the best choices since The barbarian attacks killed many romans and the Huns sacked hundreds of cities in the Roman Empire and caused chaos. I also believe 4 is another reason for the decline, since the religion started about 400 years before the fall of the empire and sparked many different believes and divided the Empire through religion.
Old Stone Age is another name for the Paleolithic Period, a prehistoric cultural stage or degree of human evolution that was marked by the use of crude chipped stone tools.
<h3>How to explain the information?</h3>
These first hunters and foragers typically used hand axes and cleavers. The major tools used throughout the Lower Paleolithic era were hand axes, choppers, and cleavers. These implements were primarily used to cut, dig, and skin the prey.
Pebble tools were typically utilized by individuals throughout the Lower Paleolithic Age (rock with cutting ability). However, there were some Homo erectus populations in the Eastern Hemisphere that were more developed and used chopping tools. The majority of tools were created during the Lower Paleolithic Age from materials like stone, wood, and bone.
Some stone tools were used for chopping fruits and roots as well as for cutting flesh and bone, removing bark from trees, and cutting into hides, or animal skins. A few of them served as handles. Some were used to create hunting spears and arrows.
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Answer:
1. Them being for the sake of their economy, religion and glory.
2. They wanted to improve their economy for instance by acquiring more spices, gold, and better and faster trading routes.
3. they really believed in the need to spread their religion, Christianity.