7.2 - Changing global patterns of power
Explore how imperial rule, Cold War rivalry and later economic connections changed the geography of power, and why the number of leading powers does not determine stability on its own.
Imperial control and a multipolar world
Polarity describes how power is distributed between major centres. A unipolar system has one dominant power, a bipolar system has two principal rival centres, and a multipolar system has several. These labels simplify a world in which economic, military and cultural leadership may be distributed differently.
The British Empire illustrates the importance of direct militarised colonial control. Colonial administration limited the political autonomy of colonised people, while armed forces and naval routes helped secure territory, trade and access to resources. Taxes, laws and investment decisions could direct production towards imperial interests. Railways and ports might connect export-producing regions to overseas markets rather than meet every local need. Control also depended on local intermediaries and encountered resistance; colonies were not passive or uniformly governed.
Between 1919 and 1939, Britain was one major power among several. France held an empire, the USA had considerable economic strength, and Germany, Japan and the Soviet Union pursued different forms of influence. The period is therefore described in the specification as multipolar rather than a world ruled by Britain alone. Colonial possession and the distribution of global power are different questions.
Decolonisation changed political geography. Independence ended formal imperial authority, although inherited institutions, language, trade routes and inequalities could persist. British India became independent as India and Pakistan in August 1947; this dated example shows why a later Commonwealth or trade relationship must not be mapped as continued British sovereignty. UK National Archives, Partition of British India.
Bipolar rivalry and indirect influence
During the Cold War, the USA and Soviet Union formed the principal rival centres of a broadly bipolar system. Their competition operated through military alliances, economic assistance, political support and cultural or ideological messages, as well as nuclear deterrence. NATO's founding treaty was signed in 1949, and the Warsaw Pact was established in 1955 and ended in 1991. These dates prevent present-day alliances being projected backwards. NATO treaty, US Office of the Historian, Warsaw Pact account.
A sphere of influence is an area where a powerful state can significantly influence decisions. It is not necessarily sovereign territory or a fixed boundary. A formal military alliance is one kind of relationship; trading links, loans, military aid and political support can create others. Smaller states also bargain, resist or seek support from both sides. A two-colour world map would conceal countries outside the main blocs and disagreement within them.
Neo-colonialism describes continuing external dominance over a formally independent state through unequal economic, political or other relationships. For example, heavy dependence on one export market can make a government vulnerable to the buyer's conditions. Debt obligations or foreign ownership can channel income abroad and narrow policy choices. This differs from a colonial power directly administering the territory. Not every loan, trade agreement or foreign investment is neo-colonial: the judgement needs evidence of unequal bargaining and constrained autonomy, alongside benefits and local agency.
After the Soviet Union's dissolution in 1991, the USA's predominance is often described as a unipolar phase, particularly in the 1990s. China's economic expansion subsequently increased its capacity to challenge US influence. That does not establish one settled contemporary classification: military reach, finance, trade and technology can imply different patterns. Calling China a potential rival is a judgement about changing capacity and relationships, not a prediction that a new bipolar system is inevitable.
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