Introduction:
The industrialisation and economic development of the USA, Great Britain, and other Western European countries took place under certain conditions that were crucial for their success. These conditions were unique to each country and played an important role in shaping their economies. This response will explore these conditions in detail.

The conditions:

1. Abundant natural resources:
One of the critical factors that contributed to the economic development of these countries was their abundant natural resources. For example, the USA had vast agricultural lands, mineral resources, and timber. Great Britain had access to coal and iron ore deposits, which were essential for the development of the iron and steel industry.

2. Technological advancements:
The development of new technologies played a pivotal role in the industrialisation of these countries. The USA and Great Britain were at the forefront of technological advancements, which allowed them to increase their productivity and efficiency. The steam engine, cotton gin, and spinning jenny were some of the innovations that revolutionised the manufacturing industry.

3. Access to capital:
Access to capital was another critical factor that enabled these countries to invest in their industries. The USA and Great Britain had well-developed financial markets that provided capital to entrepreneurs and businesses. This allowed them to purchase machinery, raw materials, and labour, which were necessary for industrialisation.

4. Political stability:
Political stability was vital for the growth of these economies. The USA and Great Britain had stable governments that promoted economic growth and provided a favourable environment for businesses to operate. This stability encouraged investment and allowed for long-term planning, which was essential for industrialisation.

5. Skilled labour:
The availability of a skilled workforce was essential for the development of these economies. The USA and Great Britain had access to skilled labour, which was necessary for the operation of their industries. This allowed them to produce high-quality products, which gave them a competitive advantage in the global marketplace.

Conclusion:
In conclusion, the industrialisation and economic development of the USA, Great Britain, and other Western European countries were facilitated by several critical factors. These included abundant natural resources, technological advancements, access to capital, political stability, and skilled labour. These factors allowed these countries to develop their industries and become economic powerhouses.