Answer:
d) The Declaration of Independence
Explanation:
The assassination of Archeduke Franz Ferdinand of Austria and misunderstanding in diplomatic communications.
During the war in Vietnam, the main opponents of the United States were North Vietnam and the Viet Cong, although these forces were being supported by communist states like Russia and China.
I think subcontinent is the large region separated by water
Answer: Chemical weathering changes the chemical makeup of rocks, transforming their minerals or combining them with new elements. Many caves have been formed from this. This is the wearing away of the earth's surface by wind, glaciers, and moving water.