Answer:
1. 1. yz2. -4. 1
Explanation:
this is hard you are the best
Answer:
Each slave was counted as three-fifths of a person. Why did several influential leaders call for a convention of states in 1787?
Answer:A weak immune system
Explanation:
When people get older their immune system becomes weak including the function of the T cells which are cells responsible for fighting infections.
This means it becomes hard to recover from a flue when someone get sick and they are always prone to sickness since their immune system no longer has the power to fight infections.
Answer:
Social structure
Explanation:
Social structure is the stable arrangement of institutions whereby human beings in a society interact and live together.
Answer:
Combustion engine
Explanation:
The combustion engine were some of the most significant and very far technologies of the Industrial Revolution. This was first presented in 1878 and was propelled by gas and air, making it unsuitable for large public use. During the Industrial Era, the combustion engine was perhaps the most efficient, both in the early years and even in the long run.