The correct order is:
1. Germanic tribes settle in the east of Britain;
2. Anglo-Saxon kingdoms form;
3. The Normans invade England;
4. England develops a strong monarchy;
5. England develops a standardized system of coinage;
Despite being still very debatable about the migration of the Anglo-Saxons in England, it is commonly accepted that these Germanic tribes migrated in the eastern part of Britain somewhere around the fifth century. After the migration, they managed to have large influence and gradually manage to become the most influential people in the society, forming multiple small Anglo-Saxon Kingdoms. These kingdoms were not very strong individually, so the Normans had no big troubles to defeat them and invade their land, thus overtaking the high niches in the hierarchy. After the tensions between the Normans and the native inhabitants of England were settled down, they started to work together, and the first strong monarchy of England arose. As all strong monarchies do in order to have stable and prosperous economy, the English one standardized its own system of coinage.
