What was the major difficulty with trade-in in ancient greece?
traders were often robbed on greek roads
the persians had all the ports blocked
mountain ranges made transportation very difficult
religious laws prohibited trade

The correct answer is C) Mountain ranges made transportation very difficult.

The major difficulty with trade in ancient Greece was that mountain ranges made transportation very difficult.

Although trade was very important for the Greeks, its geographical characteristics made it difficult to trade by land. The geography of Greece has many mountain ranges. For instance, the Olympus range, a series of mountains, that includes the famous Olympus Mountain, home of the Greek gods in Greek Mythology. Another two mountain ranges in Greece are the Pindus range and the Rhod**e range. That is why the Greeks had a very good navy, not only for war purposes but also for trade by sea.  

the expansion of the rule of empires over other territories took place as a result of several reasons including economic, ethnocentric, political, and religious, and exploratory purposes.

in terms of economic purposes: imperial governments aimed to maximize profits and with that purpose they neeeded cheap labor, access to or control of markets to sell or buy products. they also desired to find natural resources (precious metals and land). in the awake of   industrial revolution, dependent colonies provided the necessary raw materials that european factories and market needed to manufacture products.  

ethnocentric: many territories were conquered by imperial territories in an attempt to spread their cultures, values and belief as they considered them to be superior. in the late 19th century, for example, european powers held   the racist belief that inferior races should be conquered in order to “civilize” them.

political: another reason that drove conquer and expansion was patriotism and growing imperial power. it refers to national prestige, pride, and security. empires sought strategic territory to ensure access for their navies and armies around the world.

religious: the aim of converting new member of other religions was another factor that prompted expansion.   christian missionaries from europe established churches in conquered territories during the nineteenth century. thus, they spread western cultural values. furthermore, the imperial nation’s language was spread as well, through educational and religious interactions.

exploratory: imperial nations or their citizens aimed to explore territory that was unknown to them,   for different purposes including medical or scientific research, however, at the very   beginning, they did it to embark on adventure. furthermore, imperial explorers sought to discover, map, and claim territory before their imperial competition did, for national and personal glory as well as to realize the imperialist goal of expansion.

d) the constitution rights of native americans and their right to self-government on reservations