It marked the beginning of the Norman era, where life was very different from before, in the Anglo Saxon times.
The best option from the list would be "b. the California Gold Rush of 1849 Eliminate" since this is the event that drew thousands of people to the west, thus occupying the US from coast to coast.
Answer: A. Global Positioning Satellite (GPS) and two-way radio
The two instruments that were used and that were made navigation convenient and easier in 1990s are the GPS and the two-way radio. GPS is a tracking system using Global Navigation Satellite System.
Slow development, Poverty, Corruption, Human Migration, Low GDP, lack of economic and social justice
