Success of Hong Kong. Not really sure about my answer. Hope it helped
Hey there!
Let's analyze each of these. Many of these ended up boosting the economy, but only one lead to industrialism, or a big increase is manufacturing.
The Louisiana Purchase led to a lot of exploring and land trading, but not necessarily industrialization.
The revolutionary war gave the U.S. its independence but did not start any specific types of industries.
After the Mexican war, the U.S. gained more land in the West but for the same reason as the Louisiana Purchase, it did not increase manufacturing industries.
This leaves the answer as D) The War of 1812. The War of 1812 reinstated that the U.S. did not need to trade with Britain or many other countries, which led many states to begin to manufacture their own goods.
I hope this helps!
Answer: Tanks and military-grade planes
Explanation: Imperialism was about almost everywhere in Europe at the time and around that time most European countries had territories in Africa which lead to constant fighting for the land there. What this lead to was intense fights between nations by them creating proxy wars (militias/Rebel groups) to fight against each other which were being supplied by that country that wants more land for them self. With that it lead to Archduke assassination which lead countries to declare wars on one country which then would mean they would declare war on multiple countries in realty because countries would ally each other and the domino effect went down hill from that. So Archduke assassination was just really a "reason" to fight with another nation for more land (resources).