Although the ultimatum required Portugal to cease from its activities in the disputed areas, there was no similar restriction on further British efforts to establish occupation there. Agents for Rhodes were active in Mashonaland and Manicaland and in what is now eastern Zambia, and John Buchanan asserted British rule in more of the Shire Highlands. There were armed clashes between Portuguese troops who were already in occupation in Manicaland and Rhodes’ incoming men in 1890 and 1891, which ceased only when some areas that had been allocated to Portugal in the unratified 1890 treaty were reassigned to Rhodes’ British South Africa Company in the 1891 treaty, with Portugal being given more land in the Zambezi valley in compensation for this loss.