Until the 1990s, Jordan and Israel were in constant conflict over water rights to the.

River Jordan

Explanation:

The competing claims,riparian rights,water usage, and issues of water sharing from the river Jordan due to the region water scarcity had turned out to be a major problem between Israel, Syria and Jordan for many years.The water sharing had always been a central issue whenever conflict arose between the region. However, an agreement (treaty) was signed between Jordan and Israel in 1994 to solve the water sharing in the Jordan/Israel Peace treaty.

Until the 1990s, Jordan and Israel were in constant conflict over water rights to the River Jordan

d is the answer. leo should include the source.