This would be called a trade-of B.
The reason why this is correct is because if you can only build one thing as a company and you decide that building war equipment is more important to you, then you're doing a trade-off between building butter-making machines and army tanks.
Generally speaking, they kept their forts in "Ohio Valley" after, since much of the land was still contested from the Treaty of Paris.
Answer: Bill Gates and Warren Buffett frequently top the list of biggest philanthropists.
Explanation: In 2018, Buffet donated $3.4 billion to foundations dedicated to women's rights, social justice and fighting poverty, and has also donated to the Bill and Melinda Gates Foundation.
Correct me if I'm wrong but the 3 powerful European Kings that fought in the 3rd Crusade were:
1. Frederick I
2. Philip II
3. Richard I