Portugal, the western-most European country, was one of the primary players in the European Age of Discovery and Exploration. Under the leadership of Prince Henry the Navigator, Portugal took the principal role during most of the fifteenth century in searching for a route to Asia by sailing south around Africa.
B — the more the product, the less the value
The answers are,
<span>Russia’s defeat in war showed the czar’s inability to rule effectively
The intelligentsia and the working class demanded greater liberal reforms.
The social unrest in Russia's Tsar government because it did not address any of the problems with the transition problems of industrialization. The Russian empire was bureaucratic in decisions without considering and democratic form of system. </span>
Based on the given sentences above, the verbs that best agree with the subjects are INCLUDE and SHED, respectively. Notice that the subjects these verbs are referring to, the subjects are in their plural form. Therefore, we also take the plural form of the verb. Hope this answers your question.