Answer:
declining productivity is a function of increasing man/land ratio occasioned by rapid population growth.
I don't know what your options were, but here are some reasons for the US to provide support to countries in Africa:
-moral reason: it's morally right to share the wealth
-humanitarian reasons: we care about other people and we don't want other people to suffer
-economic reasons: if the US provides aid to those countries, it can later invest in them too, which will be economically profitable.
-it's also generally good if other countries are also rich, as they can be a potential market for the US goods
Think.. the grand canyon is not in texas. neither is the empire state building lol and if i remember right the NFL hall of fame is in ohio. but yeah the johnson space center is also named the huston space center so id imagine that means huston texas. process of elimination guys.
United Kingdom is surrounded with bodies of water; thus, it is easier for them to trade with people from different countries all over the world. Ships carrying various goods from different parts of the world would dock in UK ports and trade their goods for the goods found in UK. People living in UK has livelihoods that are depended on land (farming) and water (fishing).
Since UK is surrounded by bodies of water, it enjoys a milder climate compared with Russia.
Russia, on the otherhand, occupies some parts of Europe and Asia. But, Russians can not maximize the use of their land area since there are parts of Russia wherein there are permanently frozen land. Russia is also bordered by 15 countries with no access to waterways, making trading difficult but possible.
Most Russians live in the European part of the country because it has a better weather condition and trade among neighbouring countries can easily be done.